Lens driving apparatus, camera module, and optical apparatus

ABSTRACT

The present invention relates to a lens driving apparatus, comprising: a cover member which comprises an upper plate and a side plate extending downwardly from the upper plate; a housing which is located in an inner space formed by the upper plate and the side plate; a base which is positioned below the housing; a first driving unit which is positioned in the housing; a second driving unit which is located in the base and has an electromagnetic interaction with the first driving unit; and a side support member which elastically supports the housing with respect to the base, wherein the cover member comprises a first round portion formed to be rounded in at least a part of portion at which the upper plate and the side plate meet, and the housing comprises a second round portion which is formed in a part of the housing corresponding to the first round portion and has a curvature radius which is smaller than or equal to a curvature radius of the first round portion.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. application Ser. No.15/748,116, filed Jan. 26, 2018; which is the U.S. national stageapplication of International Patent Application No. PCT/KR2016/007993,filed Jul. 22, 2016, which claims priority to Korean Application Nos.10-2015-0107040, filed Jul. 29, 2015; 10-2015-0148723, filed Oct. 26,2015; and 10-2015-0174865, filed Dec. 9, 2015, the disclosures of eachof which are incorporated herein by reference in their entirety.

TECHNICAL FIELD

The teachings in accordance with exemplary and non-limiting embodimentsof this invention relate generally to a lens driving apparatus, a cameramodule, and an optical apparatus.

BACKGROUND ART

This section provides background information related to the presentdisclosure, which is not necessarily prior art.

Concomitant with widely generalized dissemination of various mobileterminals and commercialization of wireless Internet services, demandsby consumers related to mobile terminals are diversified to promptvarious types of circumferential devices or additional equipment to bemounted on mobile terminals. Inter alfa, camera modules may berepresentative items photographing an object in a still picture or avideo.

Camera modules capable of performing handshake correction (OIS: OpticalImage Stabilization) function are recently used, and the conventionalcamera module suffers from disadvantages/problems where an upper end ofa housing horizontally moving in order to perform the OIS functioncontacts a rounded portion of a cover member to generate anunintentional tilt to the housing. Particularly, when an externalpressure such as reliability test (drop or tumbling) is applied, theconventional camera module has suffered disadvantages/problems where anentire external surface of a housing does not contact an inner surfaceof a cover member but only an upper end of a corner at the housing bumpsinto a cover member to generate a deformation to the housing or togenerate a burr.

Meantime, development of camera modules having an auto focus feedbackfunction has been waged recently that includes a function ofautomatically adjusting a focus in response to a distance of an objectand a function of receiving feedbacks in real time in order to perform amore accurate auto focus implementation.

However, in a camera module having a conventional auto focus feedbackfunction, there used to be a limit of distance between a Hall sensor anda sensing magnet to thereby generate a problem in enhancing a Halloutput (intensity of magnetic force detected by the Hall sensor).Furthermore, a distance between a driving coil and a Hall sensor isproblematically proximate to allow noise to be detected by the Hallsensor due to the electromagnetic field of a coil. Still furthermore, ina camera module having a conventional auto focus feedback function, itis difficult to form a conductive line to a sensor detecting movement ofa lens module due to restricted inner space.

DETAILED DESCRIPTION OF THE INVENTION Technical Subject

In order to solve the abovementioned problems/disadvantages, exemplaryembodiments of the present invention provide a lens driving apparatuswhere an external surface abuts an inner surface of a cover member whena housing maximally moves to a cover member side.

Furthermore, exemplary embodiments of the present invention provide alens driving apparatus configured to minimize a gap between a Hallsensor and a sensing magnet and to maximize a distance between a Hallsensor and a driving coil.

Still furthermore, exemplary embodiments of the present inventionprovide a lens driving apparatus formed with a conductive line structurefor an auto focus sensor. Still furthermore, exemplary embodiments ofthe present invention provide a camera module including the lens drivingapparatus and an optical apparatus.

Technical Solution

In one general aspect of the present invention, there is provided a lensdriving apparatus comprising: a cover member including an upper plateand a lateral plate downwardly extended from the upper plate; a housingdisposed at an inner space formed by the upper plate and the lateralplate; a base disposed at a lower side of the housing; a first drivingunit disposed at the housing; a second driving unit disposed at the baseto electromagnetically interact with the first driving unit; and alateral support member elastically support the housing relative to thebase, wherein the cover member includes a first round portion formed tobe rounded in at least a part of a portion where the upper plate and thelateral plate meet, and wherein the housing includes a second roundportion formed in a part of the housing corresponding to the first roundportion and having a curvature radius smaller than or equal to acurvature radius of the first round portion.

Preferably, but not necessarily, the second round portion may contactthe first round portion in response to movement of the housing.

Preferably, but not necessarily, the second round portion may bedisposed at an upper end of the housing in order to function as an upperstopper of the housing.

Preferably, but not necessarily, the second round portion may bedisposed at an extreme left side of the housing.

Preferably, but not necessarily, an outer lateral side of the housingmay surface-contact an inner surface of the lateral plate, when thehousing maximally moves to a lateral side.

Preferably, but not necessarily, at least a part of the second roundportion may horizontally overlap with at least a part of the first roundportion.

Preferably, but not necessarily, the second round portion may overlapwith the cover member to an optical axis direction.

Preferably, but not necessarily, the housing may include a first lateralsurface, a second lateral surface adjacent to the first lateral surface,and a corner portion interposed between the first lateral surface andthe second lateral surface, wherein the second round portion is disposedat the corner portion.

Preferably, but not necessarily, the housing may include four (4)lateral surfaces and four (4) corner portions disposed among the four(4) lateral surfaces, wherein the second round portion is disposed ateach of the four corner portions.

Preferably, but not necessarily, the lens driving apparatus may furthercomprise: a bobbin disposed at an inner side of the housing; a thirddriving unit disposed at the bobbin to electromagnetically interact withthe first driving unit; an upper support member coupled to an uppersurface of the housing and to an upper surface of the bobbin; and alower support member coupled to a lower surface of the housing and to alower surface of the bobbin.

Preferably, but not necessarily, the first driving unit may include amagnet, and the second driving unit and the third driving unit mayinclude a coil.

Preferably, but not necessarily, the lens driving apparatus may furthercomprise a flexible substrate (board) formed with the second drivingunit, wherein the lateral support member may be coupled to the uppersupport member and to the substrate.

Preferably, but not necessarily, the second driving unit may be an FP(Fine Pattern) coil, and the FP coil may be mounted on the substrate.

Preferably, but not necessarily, the lens driving apparatus may furthercomprise a first sensor disposed at the bobbin to detect the firstdriving unit.

Preferably, but not necessarily, the lateral support member may includefirst to eighth wires, each spaced apart from the other wire, whereinthe first and second wires are electrically connected to the thirddriving unit, and the third to eighth wires are electrically connectedto the first sensor.

Preferably, but not necessarily, the upper support member may includefirst to eighth support units, each spaced apart from the other, and thefirst and second support units may electrically connect the first andsecond wires to third driving unit, and the third to eighth supportunits may electrically connect the third to eighth wires to the firstsensor.

Preferably, but not necessarily, the lens driving apparatus may furthercomprise a second sensor interposed between the substrate and the baseto detect the first driving unit.

Preferably, but not necessarily, the cover member may be formed in ametal plate material.

In another general aspect of the present invention, there is provided acamera module, comprising: a PCB mounted with an image sensor; a covermember including an upper plate and a lateral plate downwardly extendedfrom the upper plate; a housing disposed at an inner space formed by theupper plate and the lateral plate; a base interposed between the housingand the PCB; a first driving unit disposed at the housing; a seconddriving unit disposed at the base to electromagnetically interact withthe first driving unit; and a lateral support member elasticallysupporting the housing with respect to the base; wherein the covermember may include a first round portion formed to be rounded in atleast a part of a portion where the upper plate and the lateral platemeet; and the housing may include a second round portion formed in apart of the housing corresponding to the first round portion and havinga curvature radius smaller than or equal to a curvature radius of thefirst round portion.

In still another general aspect of the present invention, there isprovided an optical apparatus, comprising a body, a camera moduledisposed at the body to photograph an image of an object, and a displayportion disposed at one surface of the body to output the image of theobject, wherein the camera module includes: a PCB mounted with an imagesensor; a cover member including an upper plate and a lateral platedownwardly extended from the upper plate; a housing disposed at an innerspace formed by the upper plate and the lateral plate; a base interposedbetween the housing and the PCB; a first driving unit disposed at thehousing; a second driving unit disposed at the base toelectromagnetically interact with the first driving unit; and a lateralsupport member elastically supporting the housing with respect to thebase; wherein the cover member may include a first round portion formedto be rounded in at least a part of a portion where the upper plate andthe lateral plate meet; and the housing may include a second roundportion formed in a part of the housing corresponding to the first roundportion and having a curvature radius smaller than or equal to acurvature radius of the first round portion.

A lens driving apparatus according to a first exemplary embodiment ofthe present invention may comprise: a housing; a first driving unitdisposed at the housing; a second driving unit moving the first drivingunit through an electromagnetic interaction with the first driving unit;a fixing member disposed at a lower side of the housing to movablysupport the housing; and a cover member including an upper plate, alateral plate extended from the upper plate and an inner space formed bythe upper plate and the lateral plate, the inner space accommodating thehousing, wherein the cover member includes a first round portion formedto be rounded in at least a part of a portion where the upper plate andthe lateral plate meet, and wherein the housing includes a second roundportion formed in a part of the housing corresponding to the first roundportion and having a curvature radius smaller than or equal to acurvature radius of the first round portion.

Preferably, but not necessarily, an outside surface may surface-contactan inner surface of the fixing member by contact between the first roundportion and the second round portion, when the housing moves to contactan inner surface of the fixing member.

Preferably, but not necessarily, at least a part of the first roundportion may horizontally overlap with the second round portion.

Preferably, but not necessarily, the second round portion may have ashape corresponding to that of the first round portion.

Preferably, but not necessarily, the housing may include a first lateralsurface, a second lateral surface adjacent to the first lateral surfaceand a corner portion interposed between the first lateral surface andthe second lateral surface, wherein the second round portion may bedisposed at a corner portion.

Preferably, but not necessarily, the second round portion may bedisposed at an upper end of the housing.

Preferably, but not necessarily, the second round portion may verticallyoverlap with the cover member.

Preferably, but not necessarily, the housing may include four (4)lateral surfaces and four (4) corner portions disposed among the fourlateral surfaces, wherein the second round portion may be disposed ateach of the four corner portions.

Preferably, but not necessarily, the outer surface of the housing and aninner surface of the cover member may be flatly formed.

Preferably, but not necessarily, the fixing member may include a circuitsubstrate disposed with the second driving portion, and the housing maybe elastically supported by a lateral support member coupled by thecircuit substrate.

Preferably, but not necessarily, the second driving unit may include anFP (Fine Pattern) coil, and the FP coil may be mounted on the circuitsubstrate.

Preferably, but not necessarily, the lateral support member may includea plurality of wires.

Preferably, but not necessarily, the fixing member may include a basecoupled with the lateral plate of the cover member, and the housing maybe elastically supported to the base by a leaf spring.

Preferably, but not necessarily, the lens driving apparatus may furthercomprise: a bobbin accommodating a lens module while being movablysupported to an inside of the housing; and a third driving unit disposedat the bobbin, wherein the first driving unit can move the third drivingunit through an electromagnetic interaction with the third driving unit.

Preferably, but not necessarily, the third driving unit and the seconddriving unit may include a coil and the first driving unit may include amagnet.

Preferably, but not necessarily, the cover member may be formed with ametal plate material.

A camera module according to a first exemplary embodiment of the presentinvention may comprise: a housing; a first driving portion disposed atthe housing; a bobbin disposed at an inside of the housing; a seconddriving portion moving the first driving portion through anelectromagnetic interaction with the first driving portion; a fixingmember disposed at a lower side of the housing to movably support thehousing; and a cover member including an upper plate, a lateral plateextended from the upper plate and an inner space formed by the upperplate and the lateral plate, the inner space accommodating the housing,wherein the cover member includes a first round portion formed to berounded in at least a part of a portion where the upper plate and thelateral plate meet, and wherein the housing includes a second roundportion formed in a part of the housing corresponding to the first roundportion and having a curvature radius smaller than or equal to acurvature radius of the first round portion.

An optical apparatus according to a first exemplary embodiment of thepresent invention, comprising a body, a display portion disposed at onesurface of the body to display information, and a camera module disposedat the body to photograph an image or a photograph, wherein the cameramodule includes: a housing; a first driving unit disposed at thehousing; a second driving unit moving the first driving unit through anelectromagnetic interaction with the first driving unit; a fixing memberdisposed at a lower side of the housing to movably support the housing;and a cover member including an upper plate, a lateral plate extendedfrom the upper plate and an inner space formed by the upper plate andthe lateral plate, the inner space accommodating the housing, whereinthe cover member includes a first round portion formed to be rounded inat least a part of a portion where the upper plate and the lateral platemeet, and wherein the housing includes a second round portion formed ina part of the housing corresponding to the first round portion andhaving a curvature radius smaller than or equal to a curvature radius ofthe first round portion.

A lens driving apparatus according to a second exemplary embodiment ofthe present invention may comprise: a bobbin; a housing disposed at anoutside of the bobbin; a support member coupled to the bobbin and thehousing; a first magnet arranged at the bobbin; a substrate arranged atthe housing; and a sensor mounted on the substrate to detect the firstmagnet, wherein the substrate may be so arranged as to allow a mountedsurface of the sensor to face a first magnet side.

Preferably, but not necessarily, an imaginary extension line extendedfrom the substrate may meet an optical axis of the lens module coupledto the bobbin to form an acute angle.

Preferably, but not necessarily, the substrate may be arranged inparallel with the optical axis of the lens module and may be arranged inparallel with the first magnet.

Preferably, but not necessarily, the sensor may be interposed betweenthe substrate and the first magnet.

Preferably, but not necessarily, the sensor may include a sensingportion sending a magnetic field of the first magnet, and a caseaccommodating the sensing portion at an inside thereof, wherein the casemay include a first surface mounted on the substrate, a second surfacefacing the first surface, and a third surface connecting a corner of thefirst surface and a corner of the second surface, and wherein a distancebetween the sensing portion and the second surface may be shorter than adistance between the sensing portion and the third surface.

Preferably, but not necessarily, a distance between the sensing portionand the second surface may be shorter than a distance between thesensing portion and the first surface.

Preferably, but not necessarily, a distance between the sensing portionand the second surface may be 90 μm˜110 μm, and a distance between thesensing portion and the third surface may be 240 μm˜260 μm.

Preferably, but not necessarily, the lens driving apparatus may furthercomprise a second magnet arranged at the bobbin and may be symmetricallydisposed with the first magnet about the bobbin.

Preferably, but not necessarily, the lens driving apparatus may furthercomprise a first coil disposed at the bobbin, a third magnet disposed atthe housing to face the first coil, wherein the sensor may be arrangedat an upper surface of the housing and the first magnet may be arrangedat an upper surface of the bobbin and the first coil may be arranged ata lower surface of the bobbin.

Preferably, but not necessarily, the lens driving apparatus may furthercomprise a sensor portion accommodation portion arranged at an uppersurface of the housing and accommodated with the substrate and thesensor, wherein the sensor portion accommodation portion may include asubstrate support portion supporting a lower surface of the substrate,and a sensor support portion supporting a lower surface of the sensor,and wherein the substrate support portion and the sensor support portionmay be connected in a staircase manner.

Preferably, but not necessarily, the support member may include an uppersupport member coupled to an upper surface of the bobbin and to an uppersurface of the housing, wherein the upper support member may includefirst to sixth upper support members, each spaced apart from the other,and the first to fourth upper support members may be electricallyconnected to the substrate and the fifth and sixth upper support membersmay be electrically connected to the first coil.

Preferably, but not necessarily, the lens driving apparatus may furthercomprise: a base disposed at a lower side of the housing; a flexiblesubstrate disposed at the base; and a second coil disposed at theflexible substrate to face the third magnet, wherein the second coil maybe an FP (Fine Pattern) coil mounted on the flexible substrate.

Preferably, but not necessarily, the lens driving apparatus may furthercomprise a lateral support member in which one end portion of one sideis electrically connected to the flexible substrate and one end portionof the other side is electrically connected to the upper support member,wherein the lateral support member may include first to eighth lateralsupport members, each spaced apart from the other, and wherein the firstlateral support member is electrically connected to the first uppersupport member, the second lateral support member is electricallyconnected to the second upper support member, the third lateral supportmember is electrically connected to the third upper support member, thefourth lateral support member is electrically connected to the fourthupper support member, the fifth lateral support member is electricallyconnected to the fifth upper support member, and the sixth lateralsupport member is electrically connected to the sixth upper supportmember.

A camera module according to a second exemplary embodiment of thepresent invention may comprise: a bobbin; a housing disposed at anoutside of the bobbin; a support member coupled to the bobbin and thehousing; a first magnet arranged at the bobbin; a substrate arranged atthe housing; and a sensor mounted on the substrate to detect the firstmagnet, wherein the substrate may be such that a mounting surfacemounted with the sensor faces a first magnet side.

An optical apparatus according to a second exemplary embodiment of thepresent invention may comprise: a bobbin; a housing disposed at anoutside of the bobbin; a support member coupled to the bobbin and thehousing; a first magnet arranged at the bobbin; a substrate arranged atthe housing; and a sensor mounted on the substrate to detect the firstmagnet, wherein the substrate may be such that a mounting surfacemounted with the sensor faces a first magnet side.

A lens driving apparatus according to a third exemplary embodiment ofthe present invention may comprise: a housing; a first driving portiondisposed at the housing; a bobbin disposed at an inside of the housing;a second driving portion disposed at the bobbin to face the firstdriving portion; a support member coupled to the housing and the bobbin;a passive detector disposed at the bobbin; and a sensor portion disposedat the housing to detect the passive detector; wherein the supportmember may include first to fourth support units each spaced apart fromthe other, and the first to fourth support units may be electricallyconnected to the sensor portion.

Preferably, but not necessarily, the first support unit may be disposed,in at least a part thereof, on a same planar surface as that of thesecond to fourth support units.

Preferably, but not necessarily, the support member may further includefifth and sixth support units, each of the fifth and sixth support unitsbeing spaced apart from the other, and each of the fifth and sixthsupport units spaced apart from the first to fourth support units,wherein the fifth and sixth support units may be electrically connectedto the second driving portion.

Preferably, but not necessarily, the housing may include a first lateralsurface portion and a second lateral surface portion adjacent to thefirst lateral surface portion, wherein the first and second supportunits may be vertically overlapped with the first lateral surfaceportion, and the third and fourth support units may be verticallyoverlapped with the second lateral surface portion.

Preferably, but not necessarily, each of the first to sixth supportunits may be formed with a different shape.

Preferably, but not necessarily, the lens driving apparatus according toa third exemplary embodiment of the present invention may furthercomprise: a base disposed at a lower side of the housing; a thirddriving portion disposed at the base to face the first driving portion;and a lateral elastic member supporting the housing respective to thebase, wherein the lateral elastic member may include first to sixthelastic units, each spaced apart from the other, and wherein the firstto sixth elastic units may be electrically paired and connected with thefirst to sixth support units.

Preferably, but not necessarily, the second support unit may include afirst conductive portion coupled to the second elastic unit, anextension unit extended from the first conductive portion to an outsidealong a circumference of the housing, a bent portion extended from theextension unit by being bent inwardly, a coupled portion connected tothe bent portion and coupled with the housing, and a second conductiveportion extended from the bent portion to be electrically connected tothe sensor portion.

Preferably, but not necessarily, the coupled portion may include acoupling hole inserted by a coupling lug that protrudes upwardly from anupper surface of the housing, and a guide hole inserted by a guide lugprotruded upwardly from an upper surface of the housing to be spacedapart from the coupling lug.

Preferably, but not necessarily, the housing may further include anupper stopper protruded upwardly from an upper surface, wherein theupper stopper may be disposed at an inside of the first conductiveportion, the extension portion, the bent portion and the couplingportion.

Preferably, but not necessarily, the sensor portion may include a Hallsensor detecting the passive detector, and a substrate mounted at onesurface with the Hall sensor and formed at the other surface with firstto fourth terminals, wherein the first to fourth terminals may beelectrically paired with and connected to the first to fourth supportunits.

A camera module according to a third exemplary embodiment of the presentinvention may comprise: a housing; a first driving portion disposed atthe housing; a bobbin disposed at an inside of the housing; a seconddriving portion disposed at the bobbin to face the first drivingportion; a support member coupled to the housing and the bobbin; apassive detector disposed at the bobbin; a sensor portion disposed atthe housing to detect the passive detector, wherein the support membermay include first to fourth support units, each spaced apart from theother, and wherein the first to fourth support units may be electricallyconnected to the sensor portion.

An optical apparatus according to a third exemplary embodiment of thepresent invention may comprise: a housing; a first driving portiondisposed at the housing; a bobbin disposed at an inside of the housing;a second driving portion disposed at the bobbin to face the firstdriving portion; a support member coupled to the housing and the bobbin;a passive detector disposed at the bobbin; a sensor portion disposed atthe housing to detect the passive detector, wherein the support membermay include first to fourth support units, each spaced apart from theother, and wherein the first to fourth support units may be electricallyconnected to the sensor portion.

Advantageous Effects

A phenomenon of a housing being unintentionally tilted may beadvantageously inhibited even if the housing is maximally moved to acover member side according to the first exemplary embodiment of thepresent invention. Furthermore, a phenomenon of an upper stopper at thehousing generating a burr by being abraded or worn by reliability testor an external shock can be advantageously inhibited according to thefirst exemplary embodiment of the present invention.

A Hall output detected by a sensing portion of a Hall sensor can beincreased because a position of the sensing portion disposed at aninside of the Hall sensor can be distanced to a minimum from a sensingmagnet according to a second exemplary embodiment of the presentinvention. Furthermore, a distance between a sensing portion inside theHall sensor and a driving coil can be grown apart to minimize noises bythe driving coil, the noises detected by the sensing portion. Thus, aposition of bobbin arranged with a sensing magnet can be accuratelysensed.

A conductive line of a sensor for auto focus feedback function can beformed through an upper support member according to a third exemplaryembodiment of the present invention. Furthermore, rotation respective toa housing of the upper support member can be inhibited. Stillfurthermore, interference between an upper stopper of housing and acorner portion of a cover member can be minimized to reduce generationof foreign objects caused by wear and to decrease deformation as well.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view illustrating a lens driving apparatusaccording to a first exemplary embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating a lens drivingapparatus according to a first exemplary embodiment of the presentinvention.

FIG. 3 is a cross-sectional view illustrating a part of a lens drivingapparatus according to a second exemplary embodiment of the presentinvention.

FIG. 4 is a perspective view illustrating a cover member of a lensdriving apparatus according to a second exemplary embodiment of thepresent invention.

FIG. 5 is a perspective view illustrating a housing of a lens drivingapparatus according to a first exemplary embodiment of the presentinvention.

FIGS. 6(a) and 6(b) are schematic views illustrating a comparativeexample (a) and an operation of a lens driving apparatus (b) accordingto a first exemplary embodiment of the present invention.

FIG. 7 is a perspective view illustrating a lens driving apparatusaccording to a second exemplary embodiment of the present invention.

FIG. 8 is an exploded perspective view illustrating a lens drivingapparatus according to a second exemplary embodiment of the presentinvention.

FIG. 9 is a perspective view illustrating a state in which a covermember is removed from a lens driving apparatus according to a secondexemplary embodiment of the present invention.

FIG. 10 is a perspective view illustrating an upper support member of alens driving apparatus according to a second exemplary embodiment of thepresent invention.

FIG. 11 is a partially expanded view of a state in which a cover memberis removed from a lens driving apparatus according to a second exemplaryembodiment of the present invention.

FIG. 12 is a partial cross-sectional view illustrating a state in whicha cover member is removed from a lens driving apparatus according to asecond exemplary embodiment of the present invention.

FIG. 13(a) is a plane view of a first sensor in a lens driving apparatusaccording to a second exemplary embodiment of the present invention, andFIG. 13(b) is a lateral view of a first sensor.

FIGS. 14(a) and 14(b) are illustrations to explain an effect of a lensdriving apparatus according to a second exemplary embodiment of thepresent invention, where FIG. 14(a) is a partial cross-sectional viewillustrating a lens driving apparatus according to a second exemplaryembodiment of the present invention, and FIG. 14(b) is partialcross-sectional view of a lens driving apparatus according to acomparative example.

FIG. 15 is a perspective view illustrating a lens driving apparatusaccording to a third exemplary embodiment of the present invention.

FIG. 16 is an exploded perspective view illustrating a lens drivingapparatus according to a third exemplary embodiment of the presentinvention.

FIG. 17 is a perspective view illustrating a state where a cover memberis removed from FIG. 15.

FIG. 18 is a plan view illustrating a state where some elements of alens driving apparatus according to a third exemplary embodiment of thepresent invention.

FIG. 19 is a perspective view illustrating an upper support member of alens driving apparatus according to a third exemplary embodiment of thepresent invention.

FIG. 20 is a perspective view illustrating some elements of a lensdriving apparatus according to a third exemplary embodiment of thepresent invention.

FIG. 21 is a perspective view illustrating an upper support member inFIG. 20.

FIG. 22 is a perspective view illustrating a housing in FIG. 20.

BEST MODE

Some of the exemplary embodiments of the present invention will bedescribed with the accompanying drawings. Detailed descriptions ofwell-known functions, configurations or constructions are omitted forbrevity and clarity so as not to obscure the description of the presentdisclosure with unnecessary detail. Furthermore, throughout thedescriptions, the same reference numerals will be assigned to the sameelements in the explanations of the figures.

Furthermore, the terms “first,” “second,” “A”, “B”, (a), (b) and thelike, herein do not denote any order, quantity, or importance, butrather are used to distinguish one element from another. In thefollowing description and/or claims, the terms coupled and/or connected,along with their derivatives, may be used. In particular embodiments,connected may be used to indicate that two or more elements are indirect physical and/or electrical contact with each other. “Coupled” maymean that two or more elements are in direct physical and/or electricalcontact. However, coupled may also mean that two or more elements maynot be in direct contact with each other, but yet may still cooperateand/or interact with each other. For example, “coupled”, “joined” and“connected” may mean that two or more elements do not contact each otherbut are indirectly joined together via another element or intermediateelements.

An “optical axis direction” as used hereinafter may be defined as anoptical axis direction of a lens module in a state of being coupled to alens driving apparatus (10).

An “auto focus function” as used hereinafter may be defined as afunction of matching a focus relative to an object by adjusting adistance from an image sensor by moving a lens module to an optical axisdirection. Meantime, the “auto focus” may be interchangeably used with“AF”.

A “handshake correction function” as used hereinafter may be defined asa function of moving or tilting a lens module to a directionperpendicular to an optical axis direction in order to offset vibration(movement) generated on the image sensor by an external force. Meantime,the “handshake correction” may be interchangeably used with an “OIS(Optical Image Stabilization)”.

Now, a configuration of an optical apparatus according to a firstexemplary embodiment of the present invention will be describedhereinafter.

The optical apparatus according to the exemplary embodiment of thepresent invention may be a hand phone, a mobile phone, a smart phone, aportable smart device, a digital camera, a notebook computer (laptopcomputer), a PMP (Portable Multimedia Player) and a navigation device.However, the present invention is not limited thereto, and may includeany device capable of photographing an image or a photograph.

The optical device according to an exemplary embodiment of the presentinvention may include a main body (not shown), a display portion (notshown) disposed at one surface of the main body to display information,and a camera (not shown) disposed on the main body to photograph animage or a photograph.

The optical apparatus according to an exemplary embodiment of thepresent invention may include a body (not shown), a display portion (notshown) displaying information by being disposed at one surface of thebody and a camera (not shown) disposed at the body to photograph animage or a photograph and formed with a camera module (not shown).

Now, configuration of camera module will be described.

The camera module may include a lens driving apparatus (10), a lensmodule (not shown), an infrared cut-off filter (not shown), a PCB(Printed Circuit Board, not shown), and an image sensor (not shown), andmay further include a controller (not shown).

The lens module may include one or more lenses (not shown) and a lensbarrel accommodating one or more lenses. However, one element of thelens module is not limited by the lens barrel, and any holder structurecapable of supporting one or more lenses will suffice. The lens modulemay move along with the lens driving apparatus (10) by being coupled tothe lens driving apparatus (10). The lens module may be coupled to aninside of the lens driving apparatus (10), for example. The lens modulemay be screw-coupled with a lens driving apparatus (10), for example.

The lens module may be coupled to an inside of the lens drivingapparatus (10), for example. Meantime, a light having passed the lensmodule may be irradiated on an image sensor.

The infrared cut-off filter may serve to inhibit a light of infrared rayregion from entering the image sensor. The infrared cut-off filter maybe interposed between the lens module and the image sensor, for example.The infrared cut-off filter may be disposed at a holder member (notshown). However, the infrared cut-off filter may be installed at ahollow hole (510) formed at a center of a base (500). The infraredcut-off filter may be formed with a film material or a glass material,for example. Meantime, the infrared cut-off filter may be formed byallowing an infrared cut-off coating material to be coated on aplate-shaped optical filter such as an imaging plane protection coverglass or a cover glass, for example.

A PCB (Printed Circuit Board) may support the lens driving apparatus(10). The PCB may be mounted with an image sensor. For example, an uppersurface of the PCB may be disposed with the lens driving apparatus (10),and an upper inside of the PCB may be disposed with an image sensor.Furthermore, an upper external side of the PCB may be coupled by asensor holder (not shown), and the sensor holder may be coupled thereonwith the lens driving apparatus. Through this structure, a light havingpassed the lens module accommodated inside the lens driving apparatus(10) may be irradiated onto the image sensor mounted on the PCB. The PCBmay supply a power to the lens driving apparatus (10). Meantime, the PCBmay be disposed with a controller in order to control the lens drivingapparatus (10).

The image sensor may be mounted on the PCB. The image sensor may be sodisposed as to match the lens module in terms of optical axis, throughwhich the image sensor can obtain a light having passed the lens module.The image sensor may output the irradiated light as an image. The imagesensor may be a CCD (charge coupled device), an MOS (metal oxidesemi-conductor), a CPD and a CID, for example. However, the types ofimage sensor are not limited thereto.

The controller may be mounted on a PCB. The controller may be disposedat an outside of the lens driving apparatus (10). Furthermore, thecontroller may be also disposed at an inside of the lens drivingapparatus (10). The controller may control a direction, intensity and anamplitude of a current supplied to each element of lens drivingapparatus (10). The controller may perform any one of an AF function andan OIS function of the camera module by controlling the lens drivingapparatus (10). That is, the controller may move the lens module to—anoptical axis direction or tile the lens module to a direction orthogonalto the optical axis direction by controlling the lens driving apparatus(10). Furthermore, the controller may perform a feedback control of AFfunction and OIS function. To be more specific, the controller maycontrol a power or a current supplied to a third driving portion (220)and/or a second driving portion (420) by receiving a position of a firstdriving portion (320) and/or a sensing magnet (not shown) detected by asensor portion (700).

Hereinafter, configuration of lens driving apparatus (10) will bedescribed in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating a lens driving apparatusaccording to a first exemplary embodiment of the present invention, FIG.2 is an exploded perspective view illustrating a lens driving apparatusaccording to a first exemplary embodiment of the present invention, FIG.3 is a cross-sectional view illustrating a part of a lens drivingapparatus according to a second exemplary embodiment of the presentinvention, FIG. 4 is a perspective view illustrating a cover member of alens driving apparatus according to a second exemplary embodiment of thepresent invention, and FIG. 5 is a perspective view illustrating ahousing of a lens driving apparatus according to a first exemplaryembodiment of the present invention.

Referring to FIGS. 1 to 5, the lens driving apparatus (10) according toa first exemplary embodiment of the present invention may include acover member (100), a first mover (200), a second mover (300), a stator(400), a base (500), a support member (600) and a sensor portion (700).However, the lens driving apparatus (10) according to a first exemplaryembodiment of the present invention may omit any one of the cover member(100), the first mover (200), the second mover (300), the stator (400),the base (500), the support member (600) and the sensor portion (700).Inter alfa, the sensor portion (700) may be omitted as an element for AFfeedback function and/or OIS feedback function.

The cover member (100) may form an exterior look of lens drivingapparatus (10). The cover member may take a lower-opened cubic shape.However, the present invention is not limited thereto. The cover member(100) may include an upper plate (101) and a lateral plate (102)extended downwards from an external side of the upper plate (101).Meantime, a lower end of the lateral plate (102) at the cover member(100) may be mounted to the base (500).

An inner space formed by the cover member (100) and the base (500) maybe disposed with a first mover (200), a second mover (300), a stator anda support member (600).

Furthermore, the cover member (100) may be mounted to the base (500) bypartially or totally adhered by an inner lateral surface to a lateralsurface of the base (500), through which the cover member (100) may havefunctions of protecting inner elements from external shocks andinhibiting foreign objects from entering the cover member (100) as well.

The cover member (100) may be formed with a metal material, for example.In this case, the cover member (100) may inhibit radio interference.That is, the cover member (100) may inhibit electric waves generatedfrom outside of the lens driving apparatus (10) from entering an insideof the cover member (100). Furthermore, the cover member (100) mayinhibit the electric waves generated from inside of the cover member(100) from being emitted to outside of the cover member (100). However,the material of cover member (100) according to the present invention isnot limited thereto.

The cover member (100) may include an opening (110) exposing the lensmodule by being formed at the upper plate (101). The opening (110) maybe formed in a shape corresponding to that of the lens module. The sizeof opening (110) may be formed greater than that of a diameter of thelens module in order to allow the lens module to be assembled throughthe opening (110). Furthermore, a light introduced through the opening(110) may pass through the lens module. Meantime, the light havingpassed the lens module may be transmitted to the image sensor.

The first mover (200) may include a bobbin (210) and a third drivingportion (220). The first mover (200) may be coupled to a lens module,one of the constitutional elements of camera module {however, the lensmodule may be explained as one of the elements of the lens drivingapparatus (10)}. That is, the lens module may be disposed at an insideof the first mover (200). In other words, an inner circumferentialsurface of the first mover (200) may be coupled by an outercircumferential surface of the lens module. Meantime, the first mover(200) may move integrally with the lens module through an interactionwith the second mover (300). That is, the first mover (200) may move thelens module.

The first mover (200) may include a third driving portion (220) coupledto the bobbin (210).

The bobbin (210) may be coupled to the lens module. To be more specific,an inner circumferential surface of the bobbin (210) may be coupled byan outer circumferential surface of the bobbin (210). Meanwhile, thebobbin (210) may be coupled by the third driving portion (220).Furthermore, a lower surface of bobbin (210) may be coupled to a lowersupport member (620) and an upper surface of the bobbin (210) may becoupled to an upper support member (610). The bobbin (210) may bedisposed at an inside of a housing (310). The bobbin (210) may be movedto an optical axis direction relative to the housing (310).

The bobbin (210) may include a lens coupling portion (211) formedthereinside. The lens coupling portion (211) may be coupled by the lensmodule. An inner circumferential surface of the lens coupling portion(211) may be formed with a screw thread in a shape corresponding to thatof a screw thread formed at an outer circumferential surface of the lensmodule. That is, the outer circumferential surface of lens module may bescrew-connected to the inner circumferential surface of the lenscoupling portion (211). Meantime, an adhesive may be infused into thelens module and the bobbin (210). At this time, the adhesive may be UVcuring epoxy. Furthermore, the lens module and the bobbin (210) may beadhered by a heat-curing epoxy.

The bobbin (210) may include a third driving portion coupling portion(212) wound by or installed with the third driving portion (220). Thethird driving portion coupling portion (212) may be integrally formedwith an external lateral surface of the bobbin (210). Furthermore, thethird driving portion coupling portion (212) may be continuously formedalong with the external lateral surface of the bobbin (210) or may bespaced apart at a predetermined distance. The third driving portioncoupling portion (212) may include a recess portion formed by a portionof the external lateral surface of the bobbin (210) being recessed. Thethird driving portion coupling portion (212) may be disposed with thethird driving portion (220), and the third driving portion (220)disposed at the third driving portion coupling portion (212) may besupported by the third driving portion coupling portion (212).

The bobbin (210) may include an upper coupling portion (213) coupledwith an upper support member (610). The upper coupling portion (213) maybe coupled to an inner lateral portion (612) of the upper support member(610). For example, a lug (not shown) of the upper coupling portion(213) may be coupled by being inserted into a groove or a hole (notshown) at the inner lateral portion (612). Meantime, these elements maybe coupled by allowing a lug to be disposed at the upper support member(610) and by allowing a groove or a hole to be disposed at the bobbin(210). Meantime, the bobbin (210) may include a lower coupling portioncoupled to a lower support member (620). The lower coupling portionformed at a lower of the bobbin (210) may be coupled to an inner lateralportion (622) of the lower support member (620). For example, a lug (notshown) at the lower coupling portion may be coupled by being insertedinto a groove or a hole (not shown) of the inner lateral portion (622).Meanwhile, these elements may be coupled by allowing a lug to bedisposed at the lower support member (620) and by allowing a groove or ahole to be disposed on the bobbin (210).

The third driving portion (220) may be disposed in opposition to a firstdriving portion (320) of the second mover (300). The third drivingportion (220) may move the bobbin (210) relative to the housing (310)through an electromagnetic interaction with the first driving portion(320). The third driving portion (220) may include a coil. The coil maybe guided to the third driving portion coupling portion (212) to bewound on an external lateral surface of the bobbin (210). Furthermore,in another exemplary embodiment, the coil may be arranged at theexternal lateral surface of the bobbin (210) by allowing four coils tobe independently disposed to form a 90° between adjacent two coils.

When the third driving portion (220) includes a coil, an electric powersupplied to the coil may be supplied through the lower support member(620). At this time, the lower support member (620) may be divisivelyformed into a pair for power supply to the coil.

Meanwhile, the third driving portion (220) may include a pair of leadcables (not shown) in order to supply a power. In this case, each of thepair of lead cables on the third driving portion (220) may beelectrically coupled to each of a pair of lower support members (620).Alternatively, the third driving portion (220) may receive the powerfrom the upper support member (610). Meantime, when electricity issupplied to the coil, an electromagnetic field may be generated aboutthe coil. In another exemplary embodiment, the third driving portion(220) may include a magnet, and the first driving portion (320) mayinclude a coil.

The second mover (300) may be disposed at an external side of the firstmover (200) in opposition to the first mover (200). The second mover(300) may be supported by the lower-side disposed base (500). The secondmover (300) may be supported by a fixing member. At this time, thefixing member may include the base (500) and the stator (400). That is,the second mover (300) may be supported by the base (500) and/or by acircuit substrate (410). The second mover (300) may be disposed at aninner space of the cover member (100).

The second mover (300) may include a housing (310) and a first drivingportion (320). The second mover (300) may include a housing (310)disposed at an outside of the bobbin (210). Furthermore, the secondmover (300) may include a first driving portion (320) fixed to thehousing (310) by being disposed in opposition to the third drivingportion (220).

The housing (310) may be formed in a shape corresponding to that of aninner lateral surface of the cover member (100) forming an external lookof the lens driving apparatus (10). However, the shape of the housing(310) is not limited thereto, and any shape will suffice as long as thehousing is disposed at an inside of the cover member (100). At least aportion of the housing (310) may be formed in a shape corresponding tothat of an upper surface of the cover member (100).). At least a portionof the housing (310) may be formed in a shape corresponding to that of alateral surface of the cover member (100). The housing (310) may take ashape of a cube including four (4) lateral surfaces.

The housing (310) may be formed with an insulation material, and may beformed in an injection-molded article in consideration of productivity.The housing (310) is a part moving for OIS function driving, and may bearranged by being spaced apart from the bobbin (210) at a predetermineddistance. However, the housing (310) may be fixed to the base (500) inan AF model. Alternatively, the housing (310) may be omitted in the AFmodel, and a magnet formed as the first driving portion (320) may befixed to the cover member (100).

The housing (310) may be upper/lower side-opened to include a firstmover (200) in order to allow the first mover (200) to vertically move.The housing (310) may include, at an inner side, an upper/lower openedinner space (311). The inner space (311) may be movably disposed withthe bobbin (210). That is, the inner space (311) may be formed in ashape corresponding to that of bobbin (210). Furthermore, an innercircumferential surface of the housing (310) forming the inner space(311) may be disposed by being spaced apart from an outercircumferential surface of the bobbin (210).

The housing (310) may include, at a lateral surface, a first drivingportion coupling portion (312) that accommodates the first drivingportion (320) by being formed in a shape corresponding to that of thefirst driving portion (320). That is, the first driving portion couplingportion (312) may fix the first driving portion (320) by accommodatingthe first driving portion (320). The first driving portion (320) may befixed by an adhesive (not shown) to the first driving portion couplingportion (312).

Meantime, the first driving portion coupling portion (312) may bedisposed at an inner circumferential surface of the housing (310). Inthis case, there is an advantageous strength for an electromagneticinteraction with the third driving portion (220) disposed at an insideof the first driving portion (320). Furthermore, the first drivingportion coupling portion (312) may take a lower-opened shape, forexample. In this case, there is an advantageous strength for anelectromagnetic interaction between a second driving portion (420)disposed at a lower side of the first driving portion (320) and thefirst driving portion (320). For example, a lower end of the firstdriving portion (320) may be protrusively and more downwardly disposedthan a lower end of the housing (310). The first driving portioncoupling portion (312) may be formed in four pieces, for example. Eachof the first driving portion coupling portion (312) may be coupled byeach of the first driving portion (320).

The housing (310) may be coupled at an upper surface with an uppersupport member (610), and may be coupled at a lower surface with a lowersupport member (620). The housing (310) may include an upper sidecoupling portion (313) coupled to the upper support member (610). Theupper side coupling portion (313) may be coupled to an external portion(611) of the upper support member (610). For example, a lug of the upperside coupling portion (313) may be coupled to a groove or a hole (notshown) at the external portion (611) by being inserted thereinto.Meantime, in a modification, the upper support member (610) may beformed with a lug, and the housing (310) may be formed with a groove ora hole, where both elements may be coupled thereby. Meantime, thehousing (310) may include a lower coupling portion (not shown) coupledto the lower support member (620). The lower coupling portion formed ata lower surface of the housing (310) may be coupled to an externalportion (621) of the lower support member (620). For example, a lug ofthe lower coupling portion may be coupled by being inserted into agroove or a hole of the external portion (621). Meantime, in amodification, a lug may be formed at the lower support member (620) anda groove or a hole may be formed at the housing (310), whereby bothelements can be coupled.

The housing (310) may include a first lateral surface (315), a secondlateral surface (316) formed adjacent to the first lateral surface (315)and a corner portion (317) interposed between the first and the secondlateral surfaces (315, 316). In this case, a second round portion (820)may be disposed at the corner portion (317). The corner portion (317) ofthe housing (310) may be disposed with an upper stopper (318). At thistime, the second round (820) may be disposed at an upper end of theupper stopper (318). Furthermore, the housing may include four (4)lateral surfaces and four (4) corner portions disposed among the fourlateral surfaces. In this case, the second round portion (820) may bedisposed at four corner portions respectively. At this time, twoimaginary lines diagonally connecting two second round portions of thefour second round portion (820) may meet at a center of the housing(310).

An external surface of the housing (310) and an inner lateral surface ofthe lateral plate (102) of the cover member (100) may be parallelformed. To be more specific, when the housing (310) is at an initialposition, the external surface of the housing (310) and the innerlateral surface of the lateral plate (102) of the cover member (100) maybe parallel. In this case, when the housing (310) is maximally moved toa cover member (100) side, the external surface of the housing (310) andthe inner lateral surface of the lateral plate (102) of the cover member(100) may be surface-contacted, shocks generated on the housing and/orthe cover member (100) may be dispersed.

The first driving portion magnet (320) may be disposed in opposition tothe third driving portion (220) of the first mover (200). The firstdriving portion (320) may move the third driving portion (220) throughan electromagnetic interaction with the third driving portion (220). Thefirst driving portion (320) may include a magnet. The magnet may befixed to the first driving coupling portion (312) of the housing (310).The first driving portion (320) may be disposed at the housing (310) insuch a fashion that four magnets are independently formed, and twoadjacent magnets form a right angle of 90°, as illustrated in FIG. 2,for example. That is, the first driving portion (320) can promote anefficient use of inner volume by being installed on four lateralsurfaces of the housing (310), each at a predetermined interval.Furthermore, the first driving portion (320) may be attached to thehousing (310) using an adhesive, but the present invention is notlimited thereto. Meantime, the third driving portion (220) may includemagnets, and the first driving portion (320) may include coils.

A fixing member may be disposed at a lower side of the housing (310) tomovably support the housing (310). The fixing member may include astator (400) and a base (500). The fixing member may include a circuitsubstrate (410) disposed with the second driving portion (420). At thistime, the housing (310) may be elastically supported by a lateralsupport member (630) coupled to the circuit substrate (410). The fixingmember may include a base (500) coupled to a lateral plate (102) of thecover member (100). At this time, the housing (310) may be elasticallysupported to the base (500) by a leaf spring (not shown).

The stator (400) may be disposed in opposition to a lower side of thesecond mover (300). Meantime, the stator (400) can move the second mover(300). Furthermore, through holes (411, 412) parallel or correspondingto the lens module may be disposed at a center of the stator (400). Thestator (400) may include a circuit substrate (410) and a second drivingportion (420), for example. The stator (400) may include a circuitsubstrate (board) (410) interposed between the second driving portion(420) and the base (500). Furthermore, the stator (400) may include asecond driving portion (420) oppositely formed at a lower side of thefirst driving portion (320).

The circuit substrate (410) may include a flexible substrate of FPCB(Flexible Printed Circuit Board). The circuit substrate may beinterposed between the second driving portion (420) and the base (500).Meantime, the circuit substrate (410) can supply electricity to thesecond driving portion (420). Furthermore, the circuit substrate (410)may supply electricity to the third driving portion (220) or the firstdriving portion (320). For example, the circuit substrate (410) cansupply electricity to the third driving portion (220) through thelateral support member (630), the upper support member (610), theconductive member (640) and the lower support member (620). Furthermore,the circuit substrate (410) can supply electricity to the third drivingportion (220) through the upper support member (610).

The circuit substrate (410) may include a through hole (411) and aterminal portion (412), for example. The circuit substrate (410) mayinclude a through hole (411) that passes a light having passed the lensmodule. The circuit substrate (410) may include a terminal portion (412)exposed to an outside by being bent. The terminal portion (412) may beconnected to an outside power whereby the circuit substrate (410) can besupplied with the electricity.

The second driving portion (420) can move the first driving portion(320) through electromagnetic interaction. The second driving portion(420) may include a coil. When a power is applied to the coil of thesecond driving portion (420), the first driving portion (320) and thehousing (310) fixed by the first driving portion (320) may be integrallymoved through an interaction with the first driving portion (320). Thesecond driving portion (420) may be mounted on the circuit substrate(410) or may be electrically connected to the circuit substrate (410).Meantime, the second driving portion (420) may be formed with a throughhole (421) for a light of the lens module to pass by. Furthermore, thesecond driving portion (420) may be formed with an FP (Fine Patterned)coil in consideration of miniaturization of the lens driving apparatus(10, to reduce a height to a z axis direction which is an optical axisdirection) to be disposed or mounted at the circuit substrate (410). TheFP coil may be so formed as to minimize interference with a secondsensor portion (720) disposed at a lower side, for example. The FP coilmay be so formed as not to overlap with the second sensor portion (720)to the vertical direction. In this case, each opposing FP coil may beasymmetrically formed.

The base (500) may support the second mover (300). A PCB may be disposedat a lower side of the base (500). The base (500) may include a throughhole (510) formed at a position corresponding to that of a lens couplingportion (211) of the bobbin (210). The base (500) may perform a functionof sensor holder protecting the image sensor. Meantime, the through hole(510) of the base (500) may be coupled by an infrared ray filter.Alternatively, the infrared ray filter may be coupled to a separatesensor holder arranged at a lower surface of the base (500).

The base (500) may include a foreign object collection portion (520)collecting foreign objects introduced into the cover member (100), forexample. The foreign object collection portion (520) may be disposed atan upper surface of the base (500) to collect not only an adhesivematerial but also foreign objects inside of an inner space formed bycover member (100) and the base (500). The base (500) may include asensor mounting portion (530) coupled by a second sensor portion (720).That is, the second sensor portion (720) may be mounted on the sensormounting portion (530). At this time, the second sensor portion (720)may detect the first driving portion (320) coupled to the housing (310)to detect a horizontal movement of the housing (310). The sensormounting portion (530) may be disposed in two pieces, for example. Eachof the sensor mounting portions (530) may be disposed with the secondsensor portion (720). In this case, the second sensor portion (720) maybe so disposed as to detect both the x axis and y axis directionmovements of the housing (310).

The support member (600) may connect two or more of the first mover(200), the second mover (300) and the base (500). The support member(600) may elastically connect more than two elements of the first mover(200), the second mover (300) and the base (500) to allow a relativemovement among each element. The support member (600) may be formed withan elastic member. The support member (600) may include an upper supportmember (610), a lower support member (620), lateral support member (630)and a conductive member (640), for example. However, the conductivemember (640) is disposed for electrical conduction of the upper supportmember (610) and the lower support member (620), such that theconductive member (640) may be separately explained from the uppersupport member (610), the lower support member (620) and the lateralsupport member (630).

The upper support member (610) may include an external portion (611), aninternal portion (612) and a connection portion (613), for example. Theupper support member (610) may include an external portion (611) coupledwith the housing (310), an internal portion (612) coupled with thebobbin (210), and a connection portion (613) elastically connecting theexternal portion (611) and the internal portion (612).

The upper support member (610) may be connected to an upper surface ofthe first mover (200) and an upper surface of the second mover (300). Tobe more specific, the upper support member (610) may be coupled to anupper surface of bobbin (210) and an upper surface of housing (310). Theinternal portion (612) of the upper support member (610) may be coupledto an upper coupling portion (213) of the bobbin (210), and the externalportion (611) of the upper support member (610) may be coupled to anupper coupling portion (313) of the housing (310).

The upper support member (610) may be divided to six (6) pieces, forexample. At this time, two pieces of the six upper support members (610)may be conductively connected to the lower support member (620) for useto apply electricity to the third driving portion (220). Each of the twoupper support members (610) may be electrically connected to a pair oflower support members (620 a, 620 b) through the conductive member(640). Meantime, remaining four upper support members out of the sixupper support members (610) may supply the electricity to the secondsensor portion (720) and may be used for transmission/receipt ofinformation and signals between a controller and the second sensorportion (720). Furthermore, as a modification, two upper support membersamong the six upper support members (610) may be directly connected tothe third driving portion (220), and remaining four may be connected tothe second sensor portion (720).

The lower support member (620) may include a pair of lower supportmembers (620 a, 620 b), for example. That is, lower support member (620)may include a first lower support member (620 a) and a second lowersupport member (620 b). Each of the first lower support member (620 a)and the second lower support member (620 b) may receive the electricityby being connected to a pair of lead cables at the third driving portion(220) formed with a coil. Meantime, the pair of lower support members(620 a, 620 b) may be electrically connected to the circuit substrate(410). Through this configuration, the pair of lower support members(620) can supply the electricity supplied from the circuit substrate(410) to the third driving portion (220).

The lower support member (620) may include an external portion (621), aninternal portion (622) and a connection portion (623), for example. Thelower support member (620) may include an external portion (621) coupledto the housing (310), an internal portion (622) coupled to the bobbin(210) and a connection portion (623) elastically connecting the externalportion (621) and the internal portion (622).

The lower support member (620) may connect a lower surface of the firstmover (200) to a lower surface of the second mover (300). To be morespecific, the lower support member (620) may connect a lower surface ofthe bobbin (210) to a lower surface of the housing (310). The internalportion (622) of the lower support member (620) may be coupled by alower coupling portion of the bobbin (210) and the external portion(621) of the lower support member (620) may be coupled by a lowercoupling portion of the housing (310).

The lateral support member (630) may be fixed at one end to the stator(400) and/or the base (500), and coupled at the other end to the uppersupport member (610) and/or to the second mover (300). The lateralsupport member (630) may be coupled at one side to the stator (400) andcoupled at the other side to the upper support member (610), forexample. In another exemplary embodiment, the lateral support member(630) may be coupled at one side to the base (500), and coupled at theother side to the second mover (300), whereby the lateral support member(630) may elastically support the second mover (300) to allow the secondmover (300) to horizontally move or to tilt.

The lateral support member (630) may include a plurality of wires.Furthermore, the lateral support member (630) may include a plurality ofleaf springs. The lateral support member (630) may be formed in the samenumber as that of the upper support member (610), for example. That is,the lateral support member (630) may be formed in 6 pieces to berespectively connected to 6-piece upper support member (610). In thiscase, the lateral support member (630) can supply an electricitysupplied from the stator (400) or from outside to each of the 6-pieceupper support members (610). The lateral support member (630) may bedetermined in the number of pieces in consideration of symmetry, forexample. The lateral support member (630) may be formed in the totalnumber of eight (8), 2 pieces each to a corner of housing (310), forexample.

The lateral support member (630) or the upper support member (610) mayinclude a shock absorption portion (not shown), for example. The shockabsorption portion may be formed on at least any one of the lateralsupport member (630) and the upper support member (610). The shockabsorption portion may be a separate member like a damper. Furthermore,the shock absorption portion may be realized through a shape change onany one part of the lateral support member (630) and the upper supportmember (610).

The conductive member (640) may electrically connect the upper supportmember (610) and the lower support member (620). The conductive member(640) may be formed separately from the lateral support member (630).Electricity supplied to the upper support member (610) through theconductive member (640) may be supplied to the lower support member(620), and may be supplied to the third driving portion (220) throughthe lower support member (620). Meantime, as a modification, when theupper support member (610) is directly connected to the third drivingportion (220), the conductive member (640) may be omitted.

The sensor portion (700) may be used for at least any one of AF feedbackand OIS feedback. The sensor portion (700) may detect positions ormovements of at least any one of the first mover (200) and the secondmover (300). The sensor portion (700) may include a first sensor portion(710) and a second sensor portion (720), for example. The first sensorportion (710) may provide information for AF feedback by sensing arelative vertical movement of the bobbin (210) relative to the housing(310). The second sensor portion (720) may provide information for OISfeedback by detecting the horizontal direction movement and tilt of thesecond mover (300).

The first sensor portion (710) may be disposed at the first mover (200).The first sensor portion (710) may be disposed at the bobbin (210). Thefirst sensor portion (710) may be fixed by being inserted into a sensorguide groove (not shown) formed at an outer circumferential surface ofbobbin (210). The first sensor portion (710) may include a first sensor(711), a flexible PCB (712) and a terminal portion (713).

The first sensor (711) may detect movement or position of the bobbin(210). Alternatively, the first sensor (711) may detect a position ofthe first driving portion (320) mounted on the housing (310). The firstsensor (711) may be a Hall sensor, for example. The first sensor (711)may detect a relative position change between the bobbin (210) and thehousing (310) by detecting a magnetic force generated from the firstdriving portion (320).

The flexible PCB (712) may be mounted with the first sensor (711). Theflexible PCB (712) may be formed with a strip shape, for example. Atleast one portion of the flexible PCB (712) may be inserted into asensor guide groove by being formed in a shape corresponding to that ofthe sensor guide groove formed to be recessed at an upper surface of thebobbin (210). The flexible PCB (712) may be an FPCB, for example. Thatis, the flexible PCB (712) may be bent in order to correspond to a shapeof the sensor guide groove by being formed in a flexible manner. Theflexible PCB (712) may be formed with a terminal portion (713).

The terminal portion (713) may supply electricity to the first sensor(711) through the flexible PCB (712) by receiving the electricity.Furthermore, the terminal portion (713) may receive a control commandrelative to the first sensor (711) or transmit a value sensed from thefirst sensor (711). The terminal portion (713) may be formed in thenumber of four (4), for example, to be electrically connected to theupper support member (610). In this case, two terminal portions (713)may be used to receive electricity from the upper support member (610)and the remaining two terminal portions (713) may be used totransmit/receive information or a signal.

The second sensor portion (720) may be disposed at the stator (400). Thesecond sensor portion (720) may be disposed at an upper surface or alower surface of circuit substrate (410). The second sensor portion(720) may be disposed at a sensor mounting portion (530) formed at thebase (500) by being disposed at a lower surface of the circuit substrate(410), for example. The second sensor portion (720) may include a Hallsensor, for example. In this case, the second sensor portion (720) maysense the magnetic field of the first driving portion (320) to sense arelative movement of the second mover (300) relative to the stator(400). The second sensor portion (720) may be formed in the number oftwo (2) or more to detect both the x axis and y axis movements of thesecond mover (300), for example. The second sensor portion (720) may beso disposed as not to be overlapped with the FP coil of the seconddriving portion (420) to the vertical direction.

The lens driving apparatus according to an exemplary embodiment mayfurther comprise a first round portion (810), and a second round portion(820).

The first round portion (810) may be formed in a round manner on atleast a portion meeting an upper plate (101) and the lateral plate (102)of the cover member (100). At least a portion of the first round portion(810) may be overlapped with the second round portion (820) to ahorizontal direction. That is, when the housing (310) move to thehorizontal direction, the second round portion (820) may contact thefirst round portion (810). A round portion may be formed between thelateral plate (102) of the cover member (100) and the lateral plate(102) adjacent to the lateral plate (102).

When the housing (310) moves to contact an inner lateral surface of thefixing member (100), an outer circumferential surface of the housing maysurface-contact an inner circumferential surface of the fixing member(100) by the contact between the first round portion (810) and thesecond round portion (820). That is, the first round portion (810) andthe second round portion (820) may guide in such a manner that theexternal circumferential surface of the housing (310) surface-contactthe inner circumferential surface of the fixing member (100) through thecontact. In this case, the external circumferential surface of thehousing (310) and the inner circumferential surface of the fixing member(100) may function as a mechanical stopper to disperse the shocksgenerated by the housing (310) and/or the fixing member (100).

The second round portion (820) may be formed in a round manner at aportion of the housing (310) selectively contacting the first roundportion (820). That is, the second round (820) may selectively contactthe first round portion (810). Thus, the second round portion (820) mayfunction as a stopper to restrict the movement of the housing (310).

A radius of the second round portion (820) may be smaller than or equalto a radius of the first round portion (810). Furthermore, curvature ofsecond round portion (820) may be smaller than or equal to that of thefirst round portion (810). Through this configuration, a phenomenon ofthe housing (310) tilting when the second round portion (820) contactsthe first round portion (810). For example, the second round portion(820) may be formed with a shape corresponding to that of the firstround portion (810). That is, radius of the second round portion (820)and the radius of the first round portion (810) may be same.Furthermore, curvature of the second round portion (820) and thecurvature of the first round portion (810) may be same.

The second round portion (820) may be disposed at the corner portion(317) of the housing (310). Meantime, the second round portion (820) maybe disposed at each of the four (4) corner portions of the housing(310). The second round portion (820) may be disposed at an upper end ofthe housing (310). The second round portion (820) may be disposed at anupper end of the corner portion (317). The second round portion (820)may be disposed at an upper end of an upper stopper (318). Meantime, thesecond round portion (820) may be vertically overlapped with the upperplate (101) of the cover member (100). In this case, when the housing(310) is moved upwards by an external shock, the second round portion(820) may contact an inner circumferential surface of the upper plate(101) at the cover member (100) to restrict an upward movement of thehousing (310).

The second round portion (820) may be provided in four (4) pieces, eachbeing disposed at each four corner portions of the housing (310). Atthis time, two imaginary lines diagonally connecting two second roundportions out of four second round portions (820) may be orthogonal.Furthermore, two imaginary lines diagonally connecting two second roundportions out of four second round portions (820) may meet at a center ofthe housing (310). That is, each of the plurality of second roundportions (820) may be formed with a corresponding shape and may bedisposed at a corresponding position.

Hereinafter, operation of camera module according to a first exemplaryembodiment of the present invention will be described.

First, an AF (Auto Focus) function of the camera module according to theexemplary embodiment of the present invention will be explained.

When a power is supplied to the coil of the third driving portion (220),the third driving portion (220) may perform movement relative to thefirst driving portion (320) by electromagnetic interaction betweenmagnets of the third driving portion (220) and the first driving portion(320). At this time, the bobbin (210) coupled with the third drivingportion (220) may integrally move along with the third driving portion(220). That is, the bobbin (210) coupled to an inner side of the lensmodule may vertically move relative to the housing (310). The movementby the bobbin (210) may result in the lens module closing in onto ordistancing from the image sensor, whereby focus adjustment to an objectcan be performed.

Meantime, an AF feedback may be applied in order to perform a moreaccurate realization of AF function for the camera module according tothe exemplary embodiment of the present invention.

The first sensor (711) mounted on the bobbin (210) and formed with aHall sensor can detect a magnetic field of the magnet on the seconddriving portion (320) fixed to the housing (310).

Meantime, when the bobbin (210) performs a relative movement relative tothe housing (310), the amount of magnetic field detected by the firstsensor (711) is changed. Using the abovementioned method, the firstsensor may transmit a detection value to a controller by detecting themovement of z axis direction or a position of the bobbin (210). Thecontroller may determine whether to perform an additional movement tothe bobbin (210) through the received detection value. This process isperformed in real time, such that the AF function of the camera moduleaccording to an exemplary embodiment of the present invention can bemore accurately implemented through the AF feedback.

Now, the OIS function of camera module according to the exemplaryembodiment of the present invention will be described.

When a power is supplied to a coil of second driving portion (420), thefirst driving portion (320) may perform a movement relative to thesecond driving portion (420) through an electromagnetic interactionbetween the magnets between the second driving portion (420) and thefirst driving portion (320). At this time, the housing (310) coupled bythe first driving portion (320) may move integrally with the firstdriving portion (320). That is, the housing (310) may horizontally moveto the base (310). Meantime, at this time, the housing (310) may beinduced to tilt relative to the base (500). This movement of housing(310) may result in the lens module moving to a direction parallel tothat of the image sensor being positioned relative to the image sensor,whereby the OIS function can be performed.

Meantime, an OIS feedback may be applied for more accurateimplementation of OIS function of camera module according to theexemplary embodiment of the present invention.

A pair of second sensor portions (720) mounted on the base (500) andformed with a Hall sensor may detect a magnetic field of a magnet at thefirst driving portion (320) fixed to the housing (310). Meanwhile, whenthe housing (310) performs a relative movement relative to the base(500), the amount of magnetic field detected by the second sensorportion (720) is changed. Using the abovementioned method, the pair ofsecond sensor portion (720) may transmit a detection value to acontroller by detecting the movement of horizontal direction (x axis andy axis directions) or a position of the housing (310). The controllermay determine whether to perform an additional movement to the housing(320) through the received detection value. This process is performed inreal time, such that the OIS function of the camera module according toan exemplary embodiment of the present invention can be more accuratelyimplemented through the OIS feedback.

Hereinafter, effect of lens driving apparatus according to a firstexemplary embodiment of the present invention will be described withreference to the accompanying drawings.

FIGS. 6(a) and 6(b) are schematic views illustrating a comparativeexample (a) and an operation of a lens driving apparatus (b) accordingto a first exemplary embodiment of the present invention.

The lens driving apparatus according to the comparative example mayinclude a cover member (100 a), a housing (310 a), an upper stopper (318a), a lateral support member (630 a) and a base (500 a), as shown inFIG. 6(a). At this time, an upper end of the upper stopper (318 a) maybe so formed as to have a square cross-section.

When the housing (310 a) maximally moves to a horizontal direction (xaxis or y axis direction) in order to perform the OIS function, or thehousing (310 a) reaches a mechanical stop position by an external shockin the lens driving apparatus according to the comparative example, atilt is induced to the housing (310 a) as shown in FIG. 6(a). That is,movement amount (A) at an upper side of the housing (310 a) and movementamount (B) at a lower side of the housing (310 a) may be different. Inthis case, an entire external surface of the housing (310 a) may notcontact an inner surface of the cover member (100 a), but only an upperend of the upper stopper (318 a) at the housing (310 a) may hit thecover member (100 a) to generate a deformation to the housing (310 a) orto generate a burr.

The lens driving apparatus according to the exemplary embodiment of thepresent invention may include a cover member (100), a housing (310), anupper stopper (318), a lateral support member (630) and a base (500), asshown in FIG. 6(b). At this time, an upper end of the upper stopper(318) may be formed with a second round portion (820) having a shapecorresponding to that of the first round portion (810) of cover member(100).

When the housing (310) maximally moves to a horizontal direction (x axisor y axis direction) in order to perform the OIS function, or thehousing (310) reaches a mechanical stop position by an external shock inthe lens driving apparatus according to the exemplary embodiment of thepresent invention, an external surface of the housing (310) maysurface-contact an inner surface at the lateral plate (102) of the covermember (100), as illustrated in FIG. 6(b). Thus, even if the housing(310) maximally moves to a cover member (100) side, the phenomenon ofthe housing (310) being unintentionally tilted can be inhibited.Furthermore, the phenomenon of the upper stopper (318) at the housing(310) may be inhibited from being worn or abraded caused by reliabilitytests or external shocks or the phenomenon of generating a burr can bealso inhibited.

Hereinafter, configuration of optical apparatus according to a secondexemplary embodiment of the present invention will be described.

The optical apparatus according to the exemplary embodiment of thepresent invention may be a hand phone, a mobile phone, a smart phone, aportable smart device, a digital camera, a notebook computer (laptopcomputer), a PMP (Portable Multimedia Player) and a navigation device.However, the present invention is not limited thereto, and may includeany device capable of photographing an image or a photograph.

The optical apparatus according to the exemplary embodiment of thepresent invention may include a main body (not shown), a display portion(not shown) arranged at one surface of the main body to displayinformation, and a camera having a camera module (not shown) disposed atthe main body to photograph an image or a photograph.

Hereinafter, configuration of camera module according to a secondexemplary embodiment of the present invention will be described.

The camera module may include a lens driving apparatus (1000), a lensmodule (not shown), an infrared cut-off filter (not shown), a PCB (notshown), an image sensor (not shown) and a controller (not shown).

The lens module may include a lens and a lens barrel. The lens barrelmay include one or more lenses (not shown) and a lens barrelaccommodating one or more lenses. However, one element of the lensmodule is not limited by the lens barrel, and any holder structurecapable of supporting one or more lenses will suffice. The lens modulemay be coupled to the lens driving apparatus (1000) to move along withthe lens driving apparatus (1000). The lens module may be coupled to aninner side of the lens driving apparatus (1000). The lens module may bescrew-coupled or screw-connected with a lens driving apparatus (1000),for example. The lens module may be coupled to the lens drivingapparatus (1000) using an adhesive (not shown). Meantime, a light havingpassed the lens module may be irradiated on an image sensor.

The infrared cut-off filter may serve to inhibit a light of infrared rayregion from entering the image sensor. The infrared cut-off filter maybe interposed between the lens module and the image sensor, for example.The infrared cut-off filter may be disposed at a holder member (notshown) formed separately from a base (1500). However, the infraredcut-off filter may be mounted on a through hole (1510) formed at acenter of the base (1500). The infrared cut-off filter may be formedwith a film material or a glass material, for example. Meantime, theinfrared cut-off filter may be formed by allowing an infrared cut-offcoating material to be coated on a plate-shaped optical filter such asan imaging plane protection cover glass or a cover glass, for example.

The PCB may support the lens driving apparatus (1000). The PCB may bemounted with an image sensor. For example, an upper inner side of thePCB may be disposed with an image sensor, and an upper outer side of thePCB may be disposed with a sensor holder (not shown). The sensor holdermay be disposed at an upper side with a lens driving apparatus (1000).Alternatively, an upper outer side of the PCB may be disposed with lensdriving apparatus (1000), and an upper inner side of the PCB may bedisposed with an image sensor. Through this configuration, a lighthaving passed the lens module accommodated at an inside of the lensdriving apparatus (1000) can be irradiated to the image sensor mountedon the PCB. The PCB can supply electricity to the lens driving apparatus(1000). Meantime, the PCB may be disposed with a controller forcontrolling the lens driving apparatus (1000).

The image sensor may be mounted on a PCB. The image sensor may bematched with the lens module in terms of optical axis, whereby the imagesensor can obtain a light having passed the lens module. The imagesensor may output the irradiated light as an image. The image sensor maybe a CCD (charge coupled device), an MOS (metal oxide semi-conductor), aCPD and a CID, for example. However, the types of image sensor are notlimited thereto.

The controller may be mounted on the PCB. The controller may be disposedat an outside of lens driving apparatus (1000). However, the controllermay be also disposed at an inside of lens driving apparatus (1000). Thecontroller may control a direction, intensity and amplitude of a currentsupplied to each element of lens driving apparatus (1000). Thecontroller may perform any one of an AF function and an OIS function ofthe camera module by controlling the lens driving apparatus (1000). Thatis, the controller may move the lens module to an optical axis directionor tile the lens module to a direction orthogonal to the optical axisdirection by controlling the lens driving apparatus (1000). Furthermore,the controller may perform a feedback control of AF function and OISfunction. To be more specific, the controller may control a power or acurrent applied to a first driving portion (1220) to a third drivingportion (1420) by receiving a position of a housing (1310) detected by asensor portion (1700), whereby a more accurate AF function and OISfunction can be provided.

Hereinafter, configuration of lens driving apparatus (1000) according toa second exemplary embodiment of the present invention will be describedin detail with reference to the accompanying drawings.

FIG. 7 is a perspective view illustrating a lens driving apparatusaccording to a second exemplary embodiment of the present invention,FIG. 8 is an exploded perspective view illustrating a lens drivingapparatus according to a second exemplary embodiment of the presentinvention, FIG. 9 is a perspective view illustrating a state in which acover member is removed from a lens driving apparatus according to asecond exemplary embodiment of the present invention, FIG. 10 is aperspective view illustrating an upper support member of a lens drivingapparatus according to a second exemplary embodiment of the presentinvention, FIG. 11 is a partially expanded view of a state in which acover member is removed from a lens driving apparatus according to asecond exemplary embodiment of the present invention, FIG. 12 is apartial cross-sectional view illustrating a state in which a covermember is removed from a lens driving apparatus according to a secondexemplary embodiment of the present invention, and FIG. 13(a) is a planeview of a first sensor in a lens driving apparatus according to a secondexemplary embodiment of the present invention, and FIG. 13(b) is alateral view of a first sensor.

Referring to FIGS. 7 to 13(b), the lens driving apparatus (1000)according to the exemplary embodiment of the present invention mayinclude a cover member (1100), a first mover (1200), a second mover(1300), a stator (1400), a base (1500), a support member (1600) and asensor portion (1700).

However, the lens driving apparatus (1000) according to the exemplaryembodiment of the present invention may be omitted of any one of a covermember (1100), a first mover (1200), a second mover (1300), a stator(1400), a base (1500), a support member (1600) and a sensor portion(1700). Particularly, the sensor portion (1700) may be omitted as aconfiguration for AF feedback function and/or OIS feedback function.

The cover member (1000) may form an exterior look of lens drivingapparatus (1000). The cover member (1100) may take a lower-opened cubicshape. However, the present invention is not limited thereto. The covermember (1100) may be formed with a metal material, for example. To bemore specific, the cover member (1100) may be formed with a metal plate.In this case, the cover member (1100) can shield an EMI (ElectromagneticInterference). This characteristic of cover member (1100) may be calledan EMI shield can. The cover member (1100) may inhibit radio wavegenerated from outside of the lens driving apparatus (1100) fromentering an inside of the cover member (1100). Furthermore, the covermember (1100) may inhibit the radio wave generated from inside of thecover member (1100) from outputting to an outside of the cover member(1100). However, the material of cover member (1100) is not limitedthereto.

The cover member (110) may include an upper plate (1101) and a lateralplate (1102). The cover member (1100) may include an upper plate (1101)and a lateral plate (1102) extended downwards from an external side ofthe upper plate (1101). A lower end of the lateral plate (1102) at thecover member (1100) may be mounted on the base (1500). The cover member(1100) may be mounted on the base (1500) by allowing an inner surface tobe adhered with a portion or an entire portion of the base (1500). Aninner space formed by the cover member (1100) and the base (1500) may bedisposed with a first mover (1200), the second mover (1300), the stator(1400) and the support member (1600). Through this configuration, thecover member (1100) may have functions of protecting inner elements fromexternal shocks and inhibiting foreign pollution materials from enteringthe cover member (1100) as well. The cover member (1100) is not limitedthereto, and a lower end of the lateral plate (1102) at the cover member(1100) may be directly coupled to a PCB disposed at a lower side of thebase (1500).

The cover member (1100) may include an opening (1110) exposing the lensmodule by being formed at an upper plate (1101). The opening (1110) maybe formed in a shape corresponding to that of the lens module. The sizeof opening (1110) may be formed greater than that of a diameter of thelens module in order to allow the lens module to be assembled throughthe opening (1110). Meantime, a light introduced through the opening(1110) may pass through the lens module. At this time, the light havingpassed the lens module may be obtained as an image at the image sensor.

The first mover (1200) may be coupled to a lens module, one of theconstitutional elements of camera module {however, the lens module maybe explained as one of the elements for the lens driving apparatus(1000)}. The first mover (1200) may accommodate the lens module at aninside thereof. In other words, an inner circumferential surface of thefirst mover (1200) may be coupled by an outer circumferential surface ofthe lens module. Meantime, the first mover (1200) may move integrallywith the lens module through an interaction with the second mover (1300)and/or the stator (1400). That is, the first mover (1200) can move alongwith the lens module.

The first mover (1200) may include a bobbin (1210) and a first drivingportion (1220). The first mover (1200) may include a bobbin (1210)coupled with the lens module. The first mover (1200) may be disposed atthe bobbin (1210) to include the first driving portion (1220) moved byelectromagnetic interaction with the second driving portion (1320).

The bobbin (1210) may be coupled to the lens module. To be morespecific, an inner circumferential surface of the bobbin (1210) may becoupled by an outer circumferential surface of the lens module.Meanwhile, the bobbin (1210) may be coupled by the first driving portion(1220). Furthermore, a lower surface of bobbin (1210) may be coupled toa lower support member (1620) and an upper surface of the bobbin (1210)may be coupled to an upper surface of an upper support member (1610).The bobbin (1210) may be disposed at an inside of the housing (1310).The bobbin (1210) may be moved to an optical axis direction relative tothe housing (1310).

The bobbin (1210) may include a lens coupling portion (1211), a firstdriving coupling portion (1212), an upper coupling portion (1213) and alower coupling portion (not shown).

The bobbin (1210) may include a lens coupling portion (1211) formed atan inside thereof. The lens coupling portion (1211) may be coupled bythe lens module. An inner circumferential surface of the lens couplingportion (1211) may formed with a screw thread in a shape correspondingto that of a screw thread formed at an outer circumferential surface ofthe lens module. That is, the lens module may be screw-connected to thelens coupling portion (1211). Meantime, an adhesive may be interposedbetween the lens module and the bobbin (1210). At this time, theadhesive may be an UV curing epoxy. That is, the bobbin (1210) may beadhered by an UV curing epoxy and/or a heat curing epoxy.

The bobbin (1210) may include a first driving coupling portion (1212)wound by or installed with the first driving portion (1220). The firstdriving coupling portion (1212) may be integrally formed with anexternal lateral surface of the bobbin (1210). Furthermore, the firstdriving coupling portion (1212) may be continuously formed along withthe external lateral surface of the bobbin (1210) or may be spaced apartat a predetermined distance. For example, the first driving couplingportion (1212) may be formed by a portion of the external lateralsurface of the bobbin (1210) being recessed to correspond to a shape ofthe first driving portion (1220). At this time, the coil of the firstdriving portion (1220) may be directly wound on the first drivingcoupling portion (1212). As a modification, the first driving couplingportion (1212) may be formed with an upper side or a lower side beingopened. At this time, the coil of the first driving portion (1220) maybe inserted and coupled to the first driving coupling portion (1212)through the opened portion while the coil is in a pre-wound state.

The bobbin (1210) may include an upper coupling portion (1213) coupledwith the upper support member (1610). The upper coupling portion (1213)may be coupled to an inner lateral portion (1612) of the upper supportmember (1610). For example, a lug (not shown) of the upper couplingportion (1213) may be coupled by being inserted into a groove or a hole(not shown) at the inner lateral portion (1612). Meantime, the lug ofthe upper coupling portion (1213) may fix the upper support member(1610) while being heat-fused in a state of being inserted into a holeof the inner lateral portion (1612).

The bobbin (1210) may include a lower coupling portion (not shown)coupled to the lower support member (1620). The lower coupling portionmay be coupled to an inner lateral portion (1622) of the lower supportmember (1620). For example, a lug (not shown) of the lower couplingportion may be coupled by being inserted into a groove of the innerlateral portion (1622) or a hole (not shown). At this time, the lug atthe lower coupling portion may be heat-fused in a state of beinginserted into the hole of the inner lateral portion (1622) to fix thelower support member (1620).

The first driving portion (1220) may be disposed at the bobbin (1210).The first driving portion (1220) may be disposed at a position inopposition to the second driving portion (1320). The first drivingportion (1220) may move the bobbin (1210) relative to the housing (1310)through an electromagnetic interaction with the second driving portion(1320). The first driving portion (1220) may include a coil. At thistime, the first driving portion (1220) may be called a “first coil” inorder to be distinguished from other elements formed with coils. Thefirst coil may be wound on an external surface of the bobbin (1210) bybeing guided to the first driving coupling portion (1212). Furthermore,in another exemplary embodiment, the first coil (1220) may be disposedat the external lateral surface of the bobbin (1210) by allowing fourcoils to be independently disposed to form a 90° between adjacent twocoils.

The first coil may include a pair of lead cables (not shown) for powersupply. In this case, each pair of first coil may be electricallycoupled to fifth and sixth upper support members (16105, 6106) which aredividing elements of the upper support member (1610). That is, the firstcoil may receive electricity through the upper support member (1610).Alternatively, the first coil may receive electricity through the lowersupport member (1620). Meantime, when the electricity is supplied to thefirst coil, an electromagnetic field may be formed about the first coil.In a modification, the first driving portion (1220) may include amagnet. At this time, the second driving portion (1320) may include acoil.

The second mover (1300) may move for implementation of OIS function. Thesecond mover (1300) may be disposed at an outside of the first mover(1200) opposite to the first mover (1200) to move the first mover (1200)or move along with the first mover (1200). The second mover (1300) maybe movably supported by the stator (1400) and/or the base (1500)disposed at a lower side thereof. The second mover (1300) may bedisposed at an inner space of the cover member (1100). The second mover(1300) may include a housing (1310) and a second driving portion (1320).The second mover (1300) may include a housing (1310) disposed at anoutside of the bobbin (1210). Furthermore, the second mover (1300) mayinclude a second driving portion (1320) disposed opposite to the firstdriving portion (1220) to be fixed to the housing (1310).

At least a portion of the housing (1310) may be formed in a shapecorresponding to that of an inner surface of the cover member (1100).Particularly, an outside of the housing (1310) may be formed in a shapecorresponding to that of an inner surface of the lateral plate (1102) ofthe cover member (1100). The housing (1310) may take a shape of a cubeincluding four lateral surfaces, for example. However, the shape ofhousing (1310) may take any shape as long as the housing (1310) can bearranged inside the cover member (1100).

The housing (1310) may be formed with an insulation material, and may beformed in an injection-molded article in consideration of productivity.The housing (1310) is a part moving for OIS function driving, and may bearranged by being spaced apart from the cover member (1100) at apredetermined distance.

However, the housing (1310) may be fixed to the base (1500) in an AFmodel. Alternatively, the housing (1310) may be omitted in the AF modeland a magnet of the second driving portion (1320) may be fixed to thecover member (1100). An upper surface of the housing (1310) may becoupled by the upper support member (1610) and a lower surface of thehousing (1310) may be coupled by the lower support member (1620).

The housing (1310) may include an inner space (1311), a second drivingcoupling portion (1312), an upper coupling portion (1313), a lowercoupling portion (not shown) and a sensor accommodating portion (1315).The housing (1310) may be opened at an upper side and a lower side toallow the first mover (1200) to be movably accommodated to a verticaldirection. The housing (1310) may be formed at an inner side with anupper/lower opened inner space (1311). The inner space (1311) may bemovably disposed with a bobbin (1210). That is, the inner space (1311)may be formed in a shape corresponding to that of the bobbin (1210).Furthermore, an inner circumferential surface of the housing (1310)forming the inner space (1311) may be discretely formed from an outercircumferential surface of the bobbin (1210).

The housing (310) may be formed at a lateral surface with a seconddriving coupling portion (1312) formed in a shape corresponding to thatof the second driving portion (1320) to accommodate the second drivingportion (1320). That is, the second driving coupling portion (1312) mayfix the second driving portion (1320) by accommodating the seconddriving portion (1320). The second driving portion (1320) may be fixedby an adhesive (not shown) to the second driving coupling portion(1312). Meantime, the second driving coupling portion (1312) may bedisposed at an inner circumferential surface of the housing (1310). Inthis case, there is an advantageous effect for an electromagneticinteraction with the first driving portion (1220) disposed at an insideof the second driving portion (1320). Furthermore, the second drivingcoupling portion (1312) may take a lower-opened shape, for example. Inthis case, there is an advantageous strength for an electromagneticinteraction between the third driving portion (1420) disposed at a lowerside of the third driving portion (1420) and the second driving portion(1320). The second driving coupling portion (1312) may be formed in fourpieces, for example. Each of the second driving coupling portion (1312)may be coupled by each of the second driving portions (1320).

The housing (1310) may include an upper coupling portion (1313) coupledwith the upper support member (1610). The upper coupling portion (1313)may be coupled to an external circumferential portion (1611) of theupper support member (1610). For example, a lug of the upper couplingportion (1313) may be inserted into and coupled to a groove or a hole(not shown) of the external circumferential surface (1611). At thistime, the lug of the upper coupling portion (1313) may be heat-fused ina state of being inserted into a hole of the external circumferentialsurface (1611) to fix the upper support member (1610).

The housing (1310) may include a lower coupling portion (not shown)coupled to the lower support member (1620). The lower coupling portionmay be coupled to an external portion (1621) of the lower support member(1620). For example, a lug of the lower coupling portion may be coupledby being inserted into a groove or a hole of the external portion(1621). At this time, the lug of the lower coupling portion may beheat-fused in a state of being inserted into a hole of the externalportion (1621) to fix the lower support member (1620).

The housing (1310) may include a sensor accommodation portion (1315).The sensor accommodation portion (1315) may be disposed at an uppersurface of the housing (1310). The sensor accommodation portion (1315)may be accommodated with a substrate (1712) first sensor (1711) of thefirst sensor portion (1710). The sensor accommodation portion (1315) mayinclude a substrate support portion (1316) and a sensor support portion(1317). The sensor accommodation portion (1315) may include a substratesupport portion (1316) supporting a lower surface of a substrate (1712)and a sensor support portion (1317) supporting a lower surface of thefirst sensor (1711). At this time, the substrate support portion (1316)and the sensor support portion (1317) may be connected at a staircasemanner. Through this configuration, the housing (1310) can fix andsupport the substrate (1712) and the first sensor (1711) in a state ofbeing mounted on the substrate (1712).

The second driving portion (1320) may be disposed in opposition to thefirst driving portion (1220). The second driving portion (1320) may movethe first driving portion (1220) through an electromagnetic interactionwith the first driving portion (1220). The second driving portion (1320)may include a magnet. At this time, the second driving portion (1320)may be called a “driving magnet” for driving a magnet. Furthermore, thesecond driving portion (1320) may be called a “third magnet” in order tobe distinguished from a sensing magnet (1715, described later) and acompensation magnet (1716).

The third magnet may be fixed to the second driving coupling portion(1312) of the housing (1310). The second driving portion (1320) may bedisposed at the housing (1310) in such a fashion that four magnets areindependently formed, and two adjacent magnets form a right angle of90°, for example, as illustrated in FIG. 8. That is, the second drivingportion (1320) can promote an efficient use of inner volume by beinginstalled on four lateral surfaces of the housing (1310), each at apredetermined interval. Furthermore, the second driving portion (1320)may be attached to the housing (1310) using an adhesive. However, thepresent invention is not limited thereto. Meantime, as explained in theforegoing discussion, the first driving portion (1220) may include amagnet, and the second driving portion (1320) may include a coil.

A stator (1400) may be disposed opposite to a lower side of the secondmover (1300). The stator (1400) may movably support the second mover(1300). The stator (1400) may move the second mover (1300). At thistime, the first mover (1200) may be also moved along with the secondmover (1300). Furthermore, the stator (1400) may be disposed at a centerwith through holes (1411, 1412) corresponding to the lens module. Thestator (1400) may include a circuit substrate (1410) and a third drivingportion (1420), for example. The stator (1400) may include a circuitsubstrate (1410) interposed between the third driving portion (1420) andthe base (1500). Furthermore, the stator (1400) may include a thirddriving portion (1420) at a position opposite to a lower side of thesecond driving portion (1320).

The circuit substrate (1410) may include a flexible circuit substrate,which is an FPCB. The circuit substrate (1410) may be interposed betweenthe third driving portion (1420) and the base (1500). The circuitsubstrate (1410) can supply electricity to the third driving portion(1420). The circuit substrate (1410) can supply electricity to the firstdriving portion (1220) or to the second driving portion (1320). Forexample, the circuit substrate (1410) can supply electricity to a firstcoil through a lateral support member (1630) and an upper support member(1610). Furthermore, the circuit substrate (1410) can supply electricityto a substrate (1712) of the first sensor portion (1710) through thelateral support member (1630) and the upper support member (1610). Thepower supplied to the substrate (1712) may be used for driving of afirst sensor (1711).

The circuit substrate (1410) may include a through hole (1411) and aterminal portion (1412), for example. The circuit substrate (1410) mayinclude a through hole (1411) that allows passing a light having passedthe lens module. The circuit substrate (1410) may include a terminalportion (1412) exposed to outside by being downwardly bent. At least oneportion of the terminal portion (1412) may be exposed to outside to beconnected to an outside power through which electricity is supplied tothe circuit substrate (1410).

The third driving portion (1420) may move the second driving portion(1320) through electromagnetic interaction. The third driving portion(1420) may include a coil. At this time, the third driving portion(1420) may be called a “second coil” in order to be distinguished fromthe first coil. The second coil (1420) may be disposed at the circuitsubstrate (1410). The second coil (1420) may be formed opposite to thethird magnet (1320). When a power is applied to the second coil, thesecond driving portion (1320) and the housing (1310) fixed with thesecond driving portion (1320) may integrally move through interactionbetween the second coil and the second driving portion (1320).

The second coil (1420) may be an FP (Fine Pattern) coil mounted on thecircuit substrate (1410). In this case, there may be an effect in theaspect of miniaturization of the lens driving apparatus (1000, to reducea height to a z axis direction which is an optical axis direction). Thesecond coil (1420) may be so formed as to minimize interference with thelower-side positioned second sensor portion (1720). The second coil maybe so formed as not to overlap with the second sensor portion (1720) toa vertical direction.

The third driving portion (1420) may include a through hole (1421) thatallows passing a light having passed the lens module. The through hole(1421) may have a diameter corresponding to that of the lens module. Thethrough hole (1421) of the third driving portion (1420) may have adiameter corresponding to that of the through hole (1411) at the circuitsubstrate (1410). The through hole (1421) of the third driving portion(1420) may have a diameter corresponding to that of a through hole(1510) at the base (1500). The through hole (1421) may be round, forexample. However, the present invention is not limited thereto.

The base (1500) may support the second mover (1300). The base (1500) maybe disposed at a lower side with a PCB. The base (1500) may function asa sensor holder protecting an image sensor mounted on the PCB. The base(1500) may include a through hole (1510), a foreign object collectionportion (1520) and a sensor mounting portion (1530). The base (1500) mayinclude a through hole (1510) formed at a position corresponding to thatof the lens coupling portion (1211). Meantime, the through hole (1510)of the base (1500) may be coupled by an infrared ray filter. However, aninfrared ray filter may be coupled to a separate sensor holder arrangedat a lower surface of the base (1500).

The base (1500) may include a foreign object collection portion (1520)collecting foreign objects introduced into the cover member (1100). Theforeign object collection portion (1520) may be disposed at an uppersurface of the base, may include an adhesive material and may collectforeign objects in an inner space formed by the cover member (1100) andthe base (1500).

The base (1500) may include a sensor mounting portion (1530) coupled bythe second sensor portion (1720). That is, the second sensor portion(1720) may be mounted on the sensor mounting portion (1530). At thistime, the second sensor portion (1720) may detect the second drivingportion (1320) coupled to the housing (1310) to detect a horizontalmovement or a tilt of the housing (1310). The sensor mounting portion(1530) may be provided in two pieces, for example. Each of the twopieced sensor mounting portion (1530) may be disposed with the secondsensor portion (1720). In this case, the second sensor portion (1720)may be so arranged as to detect both the x-axis and y-axis directionmovements of the housing (1310).

The support member (1600) may connect two or more elements from a firstmover (1200), a second mover (1300), a stator (1400) and a base (1500).The support member (1600) may elastically connect two or more elementsfrom a first mover (1200), a second mover (1300), a stator (1400) and abase (1500) to enable a relative movement between each element. Thesupport member (1600) may be formed with an elastic member.

The support member (1600) may include an upper support member (1610), alower support member (1620) and a lateral support member (1630). Theupper support member (1610) may connect an external portion (1611), aninternal portion (1612) and a connection portion (1613), for example.The upper support member (1610) may include an external portion (1611)coupled to the housing (1310), an internal portion (1612) coupled to thebobbin (1210) and a connection portion (1613) elastically connecting theexternal portion (1611) and the internal portion (1612).

The upper support member (1610) may be connected to an upper surface ofthe first mover (1200) and an upper surface of the second mover (1300).To be more specific, the upper support member (1610) may be connected toan upper surface of the bobbin (1210) and an upper surface of thehousing (1310). The internal portion (1612) of the upper support member(1610) may be coupled to an upper coupling portion (1213) of bobbin(1210), and the external portion (1611) of the upper support member(1610) may be coupled to an upper coupling portion (1313) of housing(1310).

The upper support member (1610) may be divided to six (6) pieces, forexample. At this time, four (4) out of six upper support members (1610)may be electrically conducted with the first sensor portion (1710), andthe remaining two may be electrically conducted to the first coil. Inother words, the upper support member (1610) may include first to sixthupper support members (1610 a, 1610 b, 1610 c, 1610 d, 1619 e, 1610 f),each spaced apart from the other. At this time, the first to sixth uppersupport members (1610 a, 1610 b, 1610 c, 1610 d, 1619 e, 1610 f) may beelectrically connected to a substrate (1712). Furthermore, the fifth andsixth upper support members (1610 e, 1610 f) may be electricallyconnected to the first coil. The first to fourth upper support members(1610 a, 1610 b, 1619 c, 1610 d) may supply electricity to the firstsensor portion (1710), and may be used for transmission/receipt ofinformation or signals between the controller and the first sensorportion (1710). The fifth and sixth upper support members (1610 e, 1610f) may be used for supplying electricity to the first coil.

The lower support member (1620) may include an external portion (1621),an internal portion (1622) and a connection portion (1623). The lowersupport member (1620) may include an external portion (1621) coupled tothe housing (1310), an internal portion (1622) coupled to the bobbin(1210) and a connection portion (1623) elastically connecting theexternal portion (1621) and the internal portion (1622).

The lower support member (1620) may be connected to a lower surface ofthe first mover (1200) and a lower surface of the second mover (1300).To be more specific, the lower support member (1620) may be connected toa lower surface of the bobbin (1210) and a lower surface of the housing(1310). The internal portion (1622) of the lower support member (1620)may be coupled by a lower coupling portion of bobbin (1210), and theexternal portion (1621) of the lower support member (1620) may becoupled by a lower coupling portion of housing (1310).

The lower support member (1620) may be integrally formed, for example.However, the present invention is not limited thereto. In amodification, the lower support member (1620) may be divided to a pairto be used for supplying of electricity to the first coil.

The lateral support member (1630) may be coupled at one side to thestator (1400) and/or base (1500), and may be coupled at the other sideto the upper support member (1610) and/or housing (1310). The lateralsupport member (1630) may be coupled at one side to the stator (1400),and may be coupled at the other side to the upper support member (1610).Furthermore, as another exemplary embodiment, the lateral support member(1630) may be coupled at one side to the base (1500), and may be coupledat the other side to the housing (1310). Through this configuration, thelateral support member (1630) may elastically support the second mover(1300) to allow the second mover (1300) to horizontally move or tilt.The lateral support member (1630) may include a plurality of wires, forexample. Alternatively, the lateral support member (1630) may include aplurality of leaf springs.

The lateral support member (1630) may be electrically connected at adistal end of one side to the circuit substrate (1410), and may beelectrically connected at a distal end of the other side to the uppersupport member (1610). The lateral support member (1630) may be formedin the same number as that of the upper support member (1610), forexample. That is, the lateral support member (1630) may be formed in six(6) pieces to be respectively connected to the upper support member(1610), which is also formed in six pieces. In this case, the lateralsupport member (1630) may supply electricity supplied from the stator(1400) or an outside to each of the upper support members (1610). Thenumber of lateral support member (1630) may be determined inconsideration of symmetry, for example. The lateral support member(1630) may be provided in a total number of eight (8), two each for eachcorner of the housing (1310), for example. The lateral support member(1630) may include mutually-spaced-apart first to eight lateral supportmembers.

The first lateral support member may be electrically connected to thefirst upper support member (1610 a), the second lateral support membermay be electrically connected to the second upper support member (1610b), the third lateral support member may be electrically connected tothe third upper support member (1610 c), the fourth lateral supportmember may be electrically connected to the fourth upper support member(1610 d), the fifth lateral support member may be electrically connectedto the fifth upper support member (1610 d), and the sixth lateralsupport member may be electrically connected to the sixth upper supportmember (1610 f).

The lateral support member (1630) or the upper support member (1610) mayinclude a shock absorber (not shown) for absorbing shocks, for example.The shock absorber may be formed at any one of the lateral supportmember (1630) and the upper support member (1610). The shock absorbermay be a separate member such as a damper. Furthermore, the shockabsorber may be also realized through a shape change to one or moreportions of the lateral support member (1630) and the upper supportmember (1610).

The sensor portion (1700) may be used for any one or more of the AFfeedback and the OIS feedback. The sensor portion (1700) may detect aposition or movement of any one of the first mover (1200) and the secondmover (1300). The sensor portion (1700) may include a first sensorportion (1710) and a second sensor portion (1720), for example. Thefirst sensor portion (1710) may sense a relative vertical movement ofthe bobbin (1210) to the housing (1310) and provide information for AFfeedback. The second sensor portion (1720) may provide information forOIS feedback by detecting the horizontal movement or tilt of the secondmover (1300).

The first sensor portion (1710) may include a first sensor (1711), asubstrate (1712) and a sensing magnet (1715). The first sensor (1711)may be disposed at the housing (1310). The first sensor (1711) may bedisposed at an upper surface of housing (1310). At this time, thesensing magnet (1715) may be disposed at an upper surface of bobbin(1210). Meantime, the first driving portion (1220) may be disposed at alower surface of bobbin (1210). That is, the first sensor (1711) in thelens driving apparatus (1000) according to an exemplary embodiment ofthe present invention may be relatively adjacent to the sensing magnet(1715) and may be further distanced from the first driving portion(1220).

The first sensor (1711) may be mounted on the substrate (1712). Thefirst sensor (1711) may be disposed at the housing (1310) while being ina state of being mounted on the substrate (1712). The first sensor(1711) may be supported by a sensor support portion (1317) formed at anupper surface of the housing (1310). The first sensor (1711) may detecta position or movement of the bobbin (1210). The first sensor (1711) maydetect the position or movement of bobbin (1210) by detecting thesensing magnet (1715) arranged at the bobbin (1210), for example.

The first sensor (1711) may be a Hall sensor detecting a magnetic forceof the magnet, for example. However, the present invention is notlimited thereto. The first sensor (1711) may include a sensing portion(1711 a) sensing a magnetic field of the sensing magnet (1712) and acase (1711 b) accommodating the sensing portion (1711 a) at an insidethereof. The case (171 b) may take a cubic shape, for example. However,the present invention is not limited thereto. The case (1711 b) mayinclude a first surface (1711 c) mounted on the substrate (1712), asecond surface (1711 d) opposite to the first surface (1711 c), and athird surface (1711 e) connecting a corner of the first surface (1711 c)and a corner of the second surface (1711 d).

A distance between the sensing portion (1711 a) and the second surface(1711 d) may be shorter than a distance between the sensing portion(1711 a) and the third surface (1711 e). A distance between the sensingportion (1711 a) and the second surface (1711 d) may be shorter than adistance between the sensing portion (1711 a) and the first surface(1711 c). A distance between the sensing portion (1711 a) and the secondsurface (1711 d) may be 90 μm˜110 μm. A distance between the sensingportion (1711 a) and the third surface (1711 e) may be 240 μm˜260 μm.

The substrate (1712) may be mounted with the first sensor (1711). Thesubstrate (1712) may be disposed at the housing (1310). The substrate(1712) may be supported by a substrate support portion (1316A) formed atan upper surface of the housing (1310). The substrate (1712) may be incontact at a lower surface with the substrate support portion (1316).The substrate (1712) may be electrically conductive with the uppersupport member (1610). Through this configuration, the substrate (1712)may supply the electricity and transmit/receive information or signalsfrom the controller.

The substrate (1712) may include a terminal portion (1713) and amounting surface (1714). The mounting surface (1714) may be disposed ata side opposite to a surface formed with the terminal portion (1713).The terminal portion (1713) may be electrically connected to the uppersupport member (1610). To be more specific, four (4) terminals of theterminal portion (1713) may be formed with the first to four uppersupport members (1610 a, 1610 b, 1610 c, 1610 d), each formed in a pairfor electrical conduction. The mounting surface (1714) may be mountedwith the first sensor (1711). The mounting surface (1714) may be sodisposed as to face the sensing magnet (first magnet, 1715) in the lensdriving apparatus (1000) according to an exemplary embodiment of thepresent invention. The mounting surface (1714) may be so disposed as toface inwardly. The mounting surface (1714) may be so disposed as to facea center side of the bobbin (1210). The substrate (1712) may be sodisposed as to stand in an orthogonal manner. The first sensor (1711)may be disposed at a farther inner side than the substrate (1712).

The sensing magnet (1715) may be disposed at the bobbin (1210). At thistime, the sensing magnet (1715) may be called a “first magnet”. The lensdriving apparatus (1000) according to an exemplary embodiment mayfurther include a compensation magnet (1716) disposed at the bobbin(1210) and symmetrically disposed with the sensing magnet (1715) about acenter of the bobbin (1210). The compensation magnet (1716) may becalled a “second magnet” in order to be distinguished from the firstmagnet. The compensation magnet (1716) may be so disposed as toconstitute a magnetic force balance with the sensing magnet (1715). Thatis, the compensation magnet (1716) may be so disposed as to solve themagnetic force unbalance generated by the sensing magnet (1715). Thesensing magnet (1715) may be disposed at one side of the bobbin (1210)and the compensation magnet (1716) may be disposed at the other side ofthe bobbin (1210).

The second sensor portion (1720) may be disposed at the stator (1400).The second sensor portion (1720) may be disposed at an upper surface ora lower surface of the circuit substrate (1410). The second sensorportion (1720) may be arranged at a lower surface of the circuitsubstrate (1410) to be disposed at a sensor mounting portion (1530)formed on the base (1500), for example. The second sensor portion (1720)may include a Hall sensor, for example. In this case, the second sensorportion (1720) may sense a relative movement of the second mover (1300)relative to the stator (1400) by sensing a magnetic field of the seconddriving portion (1320). The second sensor portion (1720) may be formedin more than two pieces to detect x axis and y axis movements of thesecond mover (1300). The second sensor portion (1720) may be so disposedas not to vertically overlap with the FP coil of the third drivingportion (1420).

Hereinafter, operation of camera module according to an exemplaryembodiment of the present invention will be described with reference toaccompany drawings.

First, AF function of the camera module according to an exemplaryembodiment will be explained.

When a power is supplied to a coil of the first driving portion (1220),the first driving portion (1220) may perform a movement relative to thesecond driving portion (1320) by the electromagnetic interaction betweenthe magnet of the first driving portion (1220) and the magnet of thesecond driving portion (1320). At this time, the bobbin (1210) coupledwith the first driving portion (1220) may integrally move with the firstdriving portion (1220). That is, the bobbin (1210) coupled at an insidewith the lens module may vertically move relative to the housing (1310).This movement of bobbin (1210) may result in the lens module movingcloser or being distanced from the image sensor, whereby a focusadjustment to an object can be performed by supplying a power to thecoil of the first driving portion (1220) according to the exemplaryembodiment of the present invention.

Meanwhile, an AF feedback may be applied in order to implement a moreaccurate realization of the auto focus function in the camera moduleaccording to the exemplary embodiment of the present invention.

The first sensor (1711) formed in the form of Hall sensor by beingdisposed at the housing (1310) may detect a magnetic field of thesensing magnet fixed to the bobbin (1210). Hence, when the bobbin (1210)performs a relative movement to the housing (1310), an amount ofmagnetic field detected by the first sensor (1711) may be changed. Thefirst sensor (1711) may detect a movement to z axis direction of thebobbin (1210) or a position of the bobbin (1210) using theabovementioned method and transmit a detected value to the controller.The controller may determine whether to perform an additional movementto the bobbin (1210) using the received detected value. This process isgenerated in real time, such that the AF function of the camera moduleaccording to the exemplary embodiment of the present invention can bemore accurately implemented through the AF feedback.

Now, a handshake correction function, i.e., “OIS (Optical ImageStabilization)” of camera module according to an exemplary embodiment ofthe present invention will be described

When electricity is supplied to a coil of the third driving portion(1420), the second driving portion (1320) may perform a movement to thethird driving portion (1420) in response to electromagnetic interactionbetween the second driving portion (1320) and the third driving portion(1420).

At this time, the housing (1310) coupled by the second driving portion(1320) may integrally move with the second driving portion (1320). Thatis, the housing (1310) may horizontally move relative to the base(1500). Meanwhile, at this time the housing (1310) may be induced with atilt relative to the base (1500). At this time, the bobbin (1210) mayalso integrally move along with the housing (1310). Thus, the saidmovement of housing (1310) may result in the lens module moving to adirection parallel with a direction of image sensor relative to theimage sensor, whereby the OIS function can be implemented by supplyingelectricity to the coil at the third driving portion (1420).

Meantime, the OIS feedback may be applied in order to more accuratelyrealize the OIS function of the camera module.

A pair of second sensor portions (1720) mounted on the base (1500) andformed in a Hall sensor may detect a magnetic field of a magnet at thesecond driving portion (1320) fixed at the housing (1310). Thus, whenthe housing (1310) performs a relative movement to the base (1500), theamount of magnetic field detected by the second sensor portion (1720)may be changed. The pair of second sensor portions (1720) may detect theamount of movement or the position of horizontal direction (x axis and yaxis) at the housing (1310) by this method and transmit the detectedvalue to the controller. The controller may determine whether to performan additional movement relative to the housing (1310) through thereceived detected value. This process is generated in real time, suchthat the OIS function of camera module according to the exemplaryembodiment of the present invention can be more accurately implementedthrough the OIS feedback.

Hereinafter, an effect of camera module according to a second exemplaryembodiment will be described.

FIGS. 14(a) and 14(b) are illustrations to explain an effect of a lensdriving apparatus according to a second exemplary embodiment of thepresent invention, where FIG. 14(a) is a partial cross-sectional viewillustrating a lens driving apparatus according to a second exemplaryembodiment of the present invention, and FIG. 14(b) is partialcross-sectional view of a lens driving apparatus according to acomparative example.

Referring to FIGS. 14(a) and 14(b), it can be noted that the substrate(1712) of the first sensor portion (1710) is arranged while being stoodin the lens driving apparatus (1000) according to the exemplaryembodiment of the present invention, and that the substrate (1712) ofthe first sensor portion (1710) is arranged while being laid down flataccording to the lens driving apparatus (1000) in the comparativeexample. That is, the mounting surface (1714) of the substrate (1712) atthe first sensor portion (1710) is arranged to face a sensing magnet(1715) side in the lens driving apparatus (1000) according to theexemplary embodiment, and the mounting surface (1714) of the substrate(1712) at the first sensor portion (1710) is arranged to face a lowerside in the lens driving apparatus (1000) according to the comparativeexample.

Because of the difference in the arrangement shape of the substrate(1712) at the first sensor portion (1710), a horizontal distance (A1)between a sensing portion (1711 a) and a sensing magnet (1751) in theexemplary embodiment of the present invention may be shorter than ahorizontal distance (A1) between a sensing portion (1711 a) and asensing magnet (1751) in the comparative example.

Furthermore, a vertical distance (B1) between the sensing portion (1711a) and a first coil in the exemplary embodiment of the present inventionmay be greater than a vertical distance (B2) between the sensing portion(177 a) and a first coil in the comparative example.

That is, the sensing portion (1711 a) is more closely formed to thesensing magnet (1751) and the sensing portion (1711 a) is more distancedfrom the first coil in the exemplary embodiment over the comparativeexample. Through this configuration, a Hall output detected by thesensing portion (1711 a) can be more increased in the camera moduleaccording to the exemplary embodiment of the present invention than thatof the comparative example. Furthermore, noise of the first coildetected by the sensing portion (1711 a) can be minimized whereby theposition of the bobbin (1210) arranged with the sensing magnet (1715) inthe camera module according to the exemplary embodiment of the presentinvention can be more accurately sensed than the comparative example.

Hereinafter, configuration of optical apparatus according to a thirdexemplary embodiment of the present invention will be described.

The optical apparatus according to the third exemplary embodiment of thepresent invention may be a hand phone, a mobile phone, a smart phone, aportable smart device, a digital camera, a notebook computer (laptopcomputer), a PMP (Portable Multimedia Player) and a navigation device.However, the present invention is not limited thereto, and may includeany device capable of photographing an image or a photograph.

The optical apparatus according to the third exemplary embodiment of thepresent invention may include a main body (not shown), a display portion(not shown) arranged at one surface of the main body to displayinformation, and a camera (not shown) having a camera module (not shown)disposed at the main body to photograph an image or a photograph.

Hereinafter, configuration of camera module according to a thirdexemplary embodiment of the present invention will be described.

The camera module may include a lens driving apparatus (not shown), alens module (not shown), an infrared cut-off filter (not shown), a PCB(not shown), an image sensor (not shown) and a controller (not shown).

The lens module may include a lens and a lens barrel. The lens barrelmay include one or more lenses (not shown) and a lens barrelaccommodating one or more lenses. However, one element of the lensmodule is not limited by the lens barrel, and any holder structurecapable of supporting one or more lenses will suffice. The lens modulemay be coupled to the lens driving apparatus to move along with the lensdriving apparatus. The lens module may be coupled to an inner side ofthe lens driving apparatus, for example. The lens module may bescrew-coupled or screw-connected with a lens driving apparatus, forexample. The lens module may be coupled to the lens driving apparatususing an adhesive (not shown). Meantime, a light having passed the lensmodule may be irradiated on an image sensor.

The infrared cut-off filter may serve to inhibit a light of infrared rayregion from entering the image sensor. The infrared cut-off filter maybe interposed between the lens module and the image sensor, for example.The infrared cut-off filter may be disposed at a holder member (notshown) formed separately from a base (2500). However, the infraredcut-off filter may be mounted on a through hole (2510) formed at acenter of the base (2500). The infrared cut-off filter may be formedwith a film material or a glass material, for example. Meantime, theinfrared cut-off filter may be formed by allowing an infrared cut-offcoating material to be coated on a plate-shaped optical filter such asan imaging plane protection cover glass or a cover glass, for example.

The PCB may support the lens driving apparatus. The PCB may be mountedwith an image sensor. For example, an upper inner side of the PCB may bedisposed with an image sensor, and an upper outer side of the PCB may bedisposed with a sensor holder (not shown). The sensor holder may bedisposed at an upper side with a lens driving apparatus. Alternatively,an upper outer side of the PCB may be disposed with lens drivingapparatus, and an upper inner side of the PCB may be disposed with animage sensor. Through this configuration, a light having passed the lensmodule accommodated at an inside of the lens driving apparatus may beirradiated on the image sensor mounted on the PCB. The PCB can supplyelectricity to the lens driving apparatus. Meantime, the PCB may bedisposed with a controller for controlling the lens driving apparatus.

The image sensor may be mounted on a PCB. The image sensor may bematched with the lens module in terms of optical axis, whereby the imagesensor can obtain a light having passed the lens module. The imagesensor may output the irradiated light as an image. The image sensor maybe a CCD (charge coupled device), an MOS (metal oxide semi-conductor), aCPD and a CID, for example. However, the types of image sensor are notlimited thereto.

The controller may be mounted on the PCB. The controller may be disposedat an outside of lens driving apparatus. However, the controller may bealso disposed at an inside of lens driving apparatus. The controller maycontrol a direction, intensity and amplitude of a current supplied toeach element of lens driving apparatus. The controller may perform anyone of an AF function and an OIS function of the camera module bycontrolling the lens driving apparatus. That is, the controller may movethe lens module to an optical axis direction or tile the lens module toa direction orthogonal to the optical axis direction by controlling thelens driving apparatus. Furthermore, the controller may perform afeedback control of AF function and OIS function. To be more specific,the controller may control a power or a current applied to a firstdriving portion (2220) to a third driving portion (2420) by receiving aposition of a housing (2310) detected by a sensor portion (2700),whereby a more accurate AF function and OIS function can be provided.

Hereinafter, configuration of a lens driving apparatus according to athird exemplary embodiment of the present invention will be describedwith reference to the accompanying drawings.

FIG. 15 is a perspective view illustrating a lens driving apparatusaccording to a third exemplary embodiment of the present invention, FIG.16 is an exploded perspective view illustrating a lens driving apparatusaccording to a third exemplary embodiment of the present invention, FIG.17 is a perspective view illustrating a state where a cover member isremoved from FIG. 15, FIG. 18 is a plan view illustrating a state wheresome elements of a lens driving apparatus according to a third exemplaryembodiment of the present invention, FIG. 19 is a perspective viewillustrating an upper support member of a lens driving apparatusaccording to a third exemplary embodiment of the present invention, FIG.20 is a perspective view illustrating some elements of a lens drivingapparatus according to a third exemplary embodiment of the presentinvention, FIG. 21 is a perspective view illustrating an upper supportmember in FIG. 20, and FIG. 22 is a perspective view illustrating ahousing in FIG. 20.

Referring to FIGS. 15 to 22, the lens driving apparatus according to athird exemplary embodiment of the present invention may include a covermember (2100), a first mover (2200), a second mover (2300), a stator(2400), a base (2500), a support member (2600) and a sensor portion(2700). However, the lens driving apparatus according to the thirdexemplary embodiment of the present invention may omit any one of thecover member (2100), the first mover (2200), the second mover (2300),the stator (2400), the base (2500), the support member (2600) and thesensor portion (2700). Inter alfa, the sensor portion (2700) may beomitted as a configuration for AF feedback function and/or OIS feedbackfunction.

The cover member (2100) may form an exterior look of lens drivingapparatus. The cover member (2100) may take a lower-opened cubic shape.However, the present invention is not limited thereto. The cover member(2100) may be formed with a metal material, for example. To be morespecific, the cover member (2100) may be formed with a metal plate. Inthis case, the cover member (2100) can block an EMI (ElectromagneticInterference). Because of this characteristic of the cover member(2100), the cover member (2100) may be called an EMI shield. The covermember (2100) may shield the radio wave generated from an outside of thelens driving apparatus from entering into an inside of the cover member(2100). Furthermore, the cover member (2100) can inhibit the radio wavegenerated from inside of the cover member (2100) from being emitted tooutside of the cover member (2100). However, the material of the covermember (2100) is not limited thereto.

The cover member (2100) may include an upper plate (2101) and a lateralplate (2102). The cover member (2100) may include an upper plate (2101)and a lateral plate (2102) extended downwards from an external side ofthe upper plate (2101). Meantime, a lower end of the lateral plate(2102) at the cover member (2100) may be mounted to the base (2500). Thecover member (2100) may be adhered at an inner surface to a portion or awhole portion at the lateral surface of the base (2500) to be mounted onthe base (2500). An inner space formed by the cover member (2100) andthe base (2500) may be disposed with a first mover (2200), a secondmover (2300), a stator (2400) and a support member (2600). Through thisconfiguration, the cover member (2100) may have functions of protectinginner elements from external shocks and inhibiting foreign objects fromentering the cover member (2100) as well. However, the present inventionis not limited thereto, and a lower end of the lateral plate (2102) atthe cover member (2100) may be directly coupled to a PCB disposed at alower side of the base (2500).

The cover member (2100) may include an opening (2110) exposing the lensmodule by being formed at the upper plate (2101). The opening (2110) maybe formed in a shape corresponding to that of the lens module. The sizeof opening (2110) may be formed greater than that of a diameter of thelens module in order to allow the lens module to be assembled throughthe opening (2110). Furthermore, a light introduced through the opening(2110) may pass through the lens module. At this time, the light havingpassed the lens module may be obtained by an image sensor as an image.

The first mover (2200) may be coupled to a lens module, one of theconstitutional elements of camera module {however, the lens module maybe explained as one of the elements of the lens driving apparatus}. Thatis, the lens module may be disposed at an inside of the first mover(2200). In other words, an inner circumferential surface of the firstmover (2200) may be coupled by an outer circumferential surface of thelens module. Meantime, the first mover (2200) may move integrally withthe lens module through an interaction with the second mover (2300)and/or the stator (2400). That is, the first mover (2200) may move alongwith the lens module.

The first mover (2200) may include a bobbin (2210) and a first drivingportion (2220). The first mover (2200) may include a bobbin (2210)coupled to the lens module. The first mover (2200) may include a firstdriving portion (2220) disposed at the bobbin (2210) to move by theelectromagnetic interaction with a second driving portion (2320).

The first mover (2200) may be coupled to a lens module. To be morespecific, an inner circumferential surface of the bobbin (2210) may becoupled by an outer circumferential surface of the lens module. Thebobbin (2210) may be coupled by the first driving portion (2220). Alower surface of bobbin (2210) may be coupled to a lower support member(2620), and an upper surface of bobbin (2210) may be coupled to an uppersupport member (2610). The bobbin (2210) may be disposed at an inside ofthe housing (2310). The bobbin (2210) may relatively move to an opticalaxis direction relative to the housing (2310).

The bobbin (2210) may include a lens accommodation portion (2211), afirst driving portion coupling portion (2212) and an upper couplingportion (2213) and a lower coupling portion (not shown). The bobbin(2210) may be formed at an inside with an upper/lower-opened lensaccommodation portion (2211). The bobbin (2210) may include a lensaccommodation portion (2211) formed at an inside. The lens accommodationportion (2211) may be coupled by the lens module.

An inner circumferential surface of the lens accommodation portion(2211) may be formed with a screw thread in a shape corresponding tothat of a screw thread formed at an outer circumferential surface of thelens module. That is,

the lens accommodation portion (2211) may be screw-connected with thelens module. An adhesive may be interposed between the lens module andthe bobbin (2210). At this time, the adhesive may be UV curing epoxy.That is, the lens module and the bobbin (2210) may be adhered by aUV-curing epoxy and/or heat-curing epoxy.

The bobbin (2210) may include a first driving portion coupling portion(2212) wound by or installed with the first driving portion (2220). Thefirst driving portion coupling portion (2212) may be integrally formedwith an external lateral surface of the bobbin (2210). Furthermore, thefirst driving portion coupling portion (2212) may be continuously formedalong with the external lateral surface of the bobbin (2210) or may bespaced apart at a predetermined distance. For example, the first drivingportion coupling portion (2212) may be formed by being recessed in ashape corresponding to that of the first driving portion (2220) at aportion in an outer circumferential surface of the bobbin (2210). Atthis time, a coil of the first driving portion (2220) may be directlywound on the first driving portion coupling portion (2212). In amodification, the first driving portion coupling portion (2212) may beopened at an upper side or a lower side. At this time, a coil on thefirst driving portion (2220) may be inserted and coupled to the firstdriving portion coupling portion (2212) through the opened portion in apre-wound state.

The bobbin (2210) may include an upper coupling portion (2213) coupledwith an upper support member (2610). The upper coupling portion (2213)may be coupled to an inner lateral portion (2612) of the upper supportmember (2610). For example, a lug (not shown) of the upper couplingportion (2213) may be coupled by being inserted into a groove or a hole(not shown) at the inner lateral portion (2612) of the upper supportmember (2610). At this time, the lug of the upper coupling portion(2213) may fix the upper support member (2610) by being heat-fused in astate of being inserted into a hole of the inner lateral portion (2612).

The bobbin (2210) may include a lower coupling portion coupled to alower support member (2620). The lower coupling portion may be coupledto an inner lateral portion (2622) of the lower support member (2620).For example, a lug (not shown) at the lower coupling portion may becoupled by being inserted into a groove or a hole (not shown) of theinner lateral portion (2622) of the lower support member (2620). At thistime, the lug of the lower coupling portion may fix the lower supportmember (2620) by being heat-fused in a state of being inserted into ahole of the inner lateral portion (2622).

The first driving portion (2220) may be disposed at the bobbin (2210).The first driving portion (2220) may be disposed opposite to the seconddriving portion (2320). The first driving portion (2220) may move thebobbin (2210) to the housing (2310) through an electromagneticinteraction with the second driving portion (2320).

The first driving portion (2220) may include a coil. At this time, inorder to distinguish the first driving portion (2220) from other elementformed with a coil, the first driving portion (2220) may be called a“first coil”. The first coil may be guided to the first driving portioncoupling portion (2212) to be wound on an outer circumferential surfaceof the bobbin (2210). Furthermore, in another exemplary embodiment, thecoil may be arranged at the external lateral surface of the bobbin(2210) by allowing four coils to be independently disposed to form a 90°between adjacent two coils.

The first coil may include a pair of lead cables (not shown) in order tosupply a power. In this case, each pair of lead cables on the first coilmay be electrically coupled to fifth and sixth upper support members(2605, 606) which are dividing elements of the upper support member(2610). That is, the first coil may receive the power from the uppersupport member (2610). Alternatively, the first coil may receive thepower through the lower support member (2620).

Meantime, when electricity is supplied to the first coil, anelectromagnetic field may be generated about the first coil. In amodification, the first driving portion (2220) may include a magnet, andthe second driving portion (2320) may include a coil.

The second mover (2300) may move for OIS function. The second mover(2300) may be disposed an outside of the first mover (220) in oppositionto the first mover (2200) to move the first mover (2200) or move alongwith the first mover (2200). The second mover (2300) may be movablysupported by the stator (2400) and/or base (2500) disposed at a lowerside. The second mover (2300) may be disposed at an inner space of thecover member (2100).

The second mover (2300) may include a housing (2310) and a seconddriving portion (2320). The second mover (2300) may include a housing(2310) disposed at an outside of the bobbin (2210). Furthermore, thesecond mover (2300) may include a second driving portion (2320) fixed tothe housing (2310) by being disposed in opposition to the first drivingportion (2220).

At least a portion of the housing (2310) may be formed in a shapecorresponding to that of an inner lateral surface of the cover member(2100). Particularly, an outer lateral surface of the housing (2310) maybe so formed as to correspond in shape to that of an inner lateralsurface of lateral plate (2102) at the cover member (2100). The housing(2310) may take a cubic shape including four (4) lateral surfaces, forexample. However, the shape of the housing (2310) is not limitedthereto, and any shape will suffice as long as the housing can bedisposed at an inside of the cover member (2100).

The housing (2310) may be formed with an insulation material, and may beformed in an injection-molded article in consideration of productivity.The housing (2310) is a part moving for OIS function driving, and may bearranged by being spaced apart from the cover member (2100) at apredetermined distance. However, the housing (310) may be fixed to thebase (2500) in an AF model. Alternatively, the housing (2310) may beomitted in the AF model, and a magnet of the second driving portion(2320) may be fixed to the cover member (2100). The housing (2310) maybe coupled at an upper surface to the upper support member (2610) and ata lower surface to the lower support member (2620).

The housing (2310) may include an inner space (2311), a second drivingportion coupling portion (2312), an upper coupling portion (2313), alower coupling portion (not shown) and a sensor accommodation portion(2315).

The housing (2310) may be opened at an upper side and a lower side tomovably accommodate the first mover (2200) to a vertical direction. Thehousing (2310) may include, at an inner side, upper/lower-opened innerspace (2311). The inner space (2311) may be movably disposed with thebobbin (2210). That is, the inner space (2311) may be formed in a shapecorresponding to that of the bobbin (2210). Furthermore, an innercircumferential surface of the housing (2310) forming the inner space(2311) may be formed by being distanced from an outer circumferentialsurface of the bobbin (2210).

The housing (2310) may include, at a lateral surface, a second drivingportion coupling portion (2312) that accommodates the second drivingportion (2320) by being formed in a shape corresponding to that of thesecond driving portion (2320). That is, the second driving portioncoupling portion (2312) may fix the second driving portion (2320) byaccommodating the second driving portion (2320). The second drivingportion (2320) may be fixed to the second driving portion couplingportion (2312) by an adhesive (not shown).

Meantime, the second driving portion coupling portion (2312) may bedisposed at an inner circumferential surface of the housing (2310). Inthis case, there is an advantageous effect for an electromagneticinteraction with the first driving portion (2220) disposed at an insideof the second driving portion (2320). Furthermore, the second drivingportion coupling portion (2312) may take a lower-opened shape, forexample. In this case, there is an advantageous strength for anelectromagnetic interaction between a third driving portion (2420)disposed at a lower side of the second driving portion (2320) and thesecond driving portion (2320). For example, the second driving portioncoupling portion (2312) may be formed in four (4) pieces. Each of thesecond driving portion coupling portions (2312) may be coupled by thesecond driving portion (2320).

The housing (2310) may include an upper side coupling portion (2313)coupled to the upper support member (2610). The upper side couplingportion (2313) may be coupled to an external portion (2611) of the uppersupport member (2610). For example, a lug of the upper side couplingportion (2313) may be coupled to a groove or a hole (not shown) at theexternal portion (2611) by being inserted thereinto. Meantime, a lug ofthe upper side coupling portion (2313) may be fixed to the upper supportmember (2610) by being heat-fused in a state of being inserted into ahole of the external portion (2611).

The housing (2310) may include a lower coupling portion coupled to thelower support member (2620). The lower coupling portion may be coupledto an external portion (2621) of the lower support member (2620). Forexample, a lug of the lower coupling portion may be coupled by beinginserted into a groove or a hole of the external portion (2621) of thelower support member (2620). At this time, a lug of the lower couplingportion may be fix the lower support member (2620) by being heat-fusedin a state of being inserted into the hole of the external portion(2621).

The housing (2310) may include a sensor portion accommodation portion(2315). The sensor portion accommodation portion (2315) may be formed atan upper surface of housing (2310) by being recessed. The sensor portionaccommodation portion (2315) may be accommodated with a substrate (2712)of first sensor portion (2710) and a first sensor (not shown). That is,the housing (2310) may fix and support the substrate (2712) mounted withthe first sensor through the sensor portion accommodation portion(2315).

The housing (2310) may include continuously and adjacently arrangedfirst to fourth lateral surface portions (2310 a, 2310 b, 2310 c, 2310d). The housing (2310) may include a first edge portion (2310 e)interposed between the first and second lateral surface portions (2310a, 2310 b), a second edge portion (2310 f) interposed between the secondand third lateral surface portions (2310 b, 2310 c), a third edgeportion (2310 g) interposed between the third and fourth lateral surfaceportions (2310 c, 2310 d), and a fourth edge portion (2310 h) interposedbetween the fourth and first lateral surface portions (2310 d, 2310 a).

The housing (2310) may include a coupling lug (2314 a) and a guide lug(2314 b) formed by being distanced from the coupling lug (2314 a).

The coupling lug (2314 a) may be protruded from a first surface of thehousing (2310). To be more specific, the coupling lug (2314 a) may beprotruded upwardly from an upper surface of the housing (2310). Thecoupling lug (2314 a) may be inserted into a coupling hole (2602 f) ofthe upper support member (2610). The coupling lug (2314 a) may beheat-fused in a state of being inserted into the coupling hole (2602 f)of the upper support member (2610). In this case, the heat-fusedcoupling lug (2314 a) may fix the upper support member (2610) to anupper surface of housing (2310).

The guide lug (2314 b) may be spaced apart from the coupling lug (2314a). The guide lug (2314 b) may be protruded from a first surface ofhousing (2310). To be more specific, the guide lug (2314 b) may beprotruded upwardly from an upper surface of the housing (2310). Theguide lug (2314 b) may be inserted into a guide hole (1602 g) of theupper support member (2610). The guide lug (2314 b) may be formed with adiameter smaller than that of the coupling lug (2314 a). Furthermore, aheight of the guide lug (2314 b) may be shorter than that of thecoupling lug (2314 a). However, the present invention is not limitedthereto. The guide lug (2314 b) may inhibit the upper support member(2610) fixed to the housing (2310) by the coupling lug (2314 a) fromrotating.

The housing (2310) may include an upper stopper (2316) protruded from afirst surface. The housing (2310) may include an upper stopper (2316)protruded upwardly from an upper surface. The upper stopper (2316) maybe vertically overlapped with the cover member (2100). Through thisconfiguration, when the housing (2310) moves upwardly, the upper stopper(2316) and the cover member (2100) may be contacted to restrict themovement of housing (2310). That is, the upper stopper (2316) mayrestrict a movement limit by mechanism of the housing (2310).

The upper stopper (2316) may be disposed at an inside of a firstconductive portion (2602 a) of upper support member (2610), an extensionportion (2602 b), a bent portion (2602 c) and a coupling portion (2602d). That is, the upper stopper (2316) may be so disposed as not tooverlap with corners of cover member (2100) to a vertical direction. Inthis case, interference between the upper stopper (2316) and cornerportions of the cover member (2100) can be minimized to thereby minimizegeneration of foreign objects caused by wear and deformation. However,the present invention is not limited thereto, and the upper stopper(2316) may be disposed at a farther inner side than that of any one of afirst conductive portion (2602 a), an extension portion (2602 b), a bentportion (2602 c) and a coupling portion (2602 d).

The second driving portion (2320) may be disposed in opposition to thefirst driving portion (2220). The second driving portion (2320) may movethe first driving portion (2220) through an electromagnetic interactionwith the first driving portion (2220). The second driving portion (2320)may include a magnet. At this time, the second driving portion (2320)may be called a “driving magnet” for the purpose of driving.Furthermore, the second driving portion (2320) may be called a “firstmagnet” in order to be distinguished from a sensing magnet (2715,described later) and a compensation magnet (2716).

The first magnet may be fixed to the second driving portion couplingportion (2312) of the housing (2310).

The second driving portion (2320) may be disposed at the housing (2310)in such a fashion that four magnets are independently formed, and twoadjacent magnets form a right angle of 90°, as illustrated in FIG. 16,for example. That is, the second driving portion (2320) can promote anefficient use of inner volume by being installed on four lateralsurfaces of the housing (2310), each at a predetermined interval.Furthermore, the second driving portion (2320) may be attached to thehousing (2310) using an adhesive, but the present invention is notlimited thereto. Meantime, as discussed above, the first driving portion(2220) may include magnets, and the second driving portion (2320) mayinclude coils.

The stator (2400) may be disposed in opposition to a lower side of thesecond mover (2300). The stator (2400) may movably support the secondmover (2300). The stator (2400) may move the second mover (2300). Atthis time, the first mover (2200) may also move along with the secondmover (2300). The stator (2400) may be disposed at a center with throughholes (2411, 421) corresponding to the lens module.

The stator (2400) may include a circuit substrate (2410) and a thirddriving portion (2420), for example. The stator (2400) may include acircuit substrate (2410) interposed between the third driving portion(2420) and the base (2500). Furthermore, the stator (2400) may include athird driving portion (2420) at a position oppositely formed at a lowerside of the second driving portion (2320).

The circuit substrate (2410) may include a flexible substrate of FPCB(Flexible Printed Circuit Board). The circuit substrate (2410) may beinterposed between the third driving portion (2420) and the base (2500).Meantime, the circuit substrate (2410) can supply electricity to thethird driving portion (2420). Furthermore, the circuit substrate (2410)can supply electricity to the first driving portion (2220) or to thesecond driving portion (2320). For example, the circuit substrate (2410)can supply electricity to the first coil through the lateral supportmember (2630) and the upper support member (2610). Furthermore, thecircuit substrate (2410) can supply electricity to a substrate (2712) ofthe first sensor portion (2710) through the lateral support member(2630) and the upper support member (2610). The power supplied to thesubstrate (2712) may be used for driving of the first sensor.

The circuit substrate (2410) may include a through hole (2411) and aterminal portion (2412), for example. The circuit substrate (2410) mayinclude a through hole (2411) that passes a light having passed the lensmodule. The circuit substrate (2410) may include a terminal portion(2412) exposed to an outside by being bent downwardly. The terminalportion (2412) may be connected to an outside power by being exposed tooutside on at least a portion thereof, whereby the circuit substrate(2410) can be supplied with the electricity.

The third driving portion (2420) can move the second driving portion(2320) through electromagnetic interaction. The third driving portion(2420) may include a coil. At this time, the third driving portion(2420) may be called a “second coil” in order to be distinguished fromthe first coil. The second coil may be disposed at the circuit substrate(2410). The second coil may be disposed in opposition to the firstmagnet.

When a power is applied to the second coil, the second driving portion(2320) and the housing (2310) fixed by the second driving portion (2320)may be integrally moved through an interaction with the second coil andthe second driving portion (2320).

The second coil may be formed with an FP (Fine Patterned) coil mountedon the circuit substrate (2410). In this case, this configuration may beadvantageous in the aspect of miniaturization of the lens drivingapparatus (to reduce a height to a z axis direction which is an opticalaxis direction)

The second coil may be so formed as to minimize interference with asecond sensor portion (2720) disposed at a lower side, for example. Thesecond coil may be so formed as not to overlap with the second sensorportion (2720) to a vertical direction.

The third driving portion (2420) may be formed with a through hole(2421) passing a light of the lens module. The through hole (2421) mayhave a diameter corresponding to that of the lens module. The throughhole (2421) of the third driving portion (2420) may have a diametercorresponding to that of the through hole (2411) at the circuitsubstrate (2410). The through hole (2421) of the third driving portion(2420) may have a diameter corresponding to that of the through hole(2510) at the base (2500). The through hole (2421) may be formed in around shape. However, the present invention is not limited thereto.

The base (2500) may support the second mover (2300). A PCB may bedisposed at a lower side of the base (2500). The base (2500) may performa function of sensor holder protecting an image sensor mounted on thePCB.

The base (2500) may include a through hole (2510), a foreign objectcollection portion (2520) and a sensor mounting portion (2530). The base(2500) may include a through hole (2510) formed at a positioncorresponding to that of a lens accommodation portion (2211) of bobbin(2210). Meantime, the through hole (2510) of base (2500) may be coupledby an infrared ray filter. However, the infrared ray filter may becoupled to a separate sensor holder arranged at a lower surface of thebase (2500).

The base (2500) may include a foreign object collection portion (2520)collecting foreign objects introduced into the cover member (2100). Theforeign object collection portion (2520) may be disposed at an uppersurface of the base (2500) to include an adhesive material, wherebyforeign objects inside of an inner space formed by cover member (2100)and the base (2500) can be collected.

The base (2500) may include a sensor mounting portion (2530) coupled bya second sensor portion (2720). That is, the second sensor portion(2720) may be mounted on the sensor mounting portion (2530). At thistime, the second sensor portion (2720) may detect the second drivingportion (2320) coupled to the housing (2310) to detect a horizontalmovement or a tilt of the housing (2310). The sensor mounting portion(2530) may be disposed in two pieces, for example. Each of the sensormounting portions (2530) may be disposed with the second sensor portion(2720). In this case, the second sensor portion (2720) may be sodisposed as to detect both the x axis and y axis direction movements ofthe housing (2310).

The support member (2600) may connect two or more of the first mover(2200), the second mover (2300) and the base (2500). The support member(2600) may elastically connect more than two elements of the first mover(2200), the second mover (2300), the stator (2400) and the base (2500)to allow a relative movement among each element. At least a portion ofthe support member (2600) may be formed to have elasticity. In thiscase, the support member (2600) may be called an elastic member.

The support member (2600) may include an upper support member (2610), alower support member (2620) and a lateral support member (2630).Meantime, the upper support member (2610) may be called a “first supportmember”. At this time, the lower support member (2620) may be called a“second support member”, and the lateral support member (2630) may becalled a “third support member” in order to be distinguished from thefirst and second support members

Although the foregoing elaboration has described to distinguish theupper support member (2610) from the lower support member (2620) bylimiting a position thereof for the convenience of explanation, theupper support member (2610) and the lower support member (2620) may bealternatively change in position, and any one may replace the other.

The upper support member (2610) may include an external portion (2611),an internal portion (2612) and a connection portion (2613), for example.The upper support member (2610) may include an external portion (2611)coupled with the housing (2310), an internal portion (2612) coupled withthe bobbin (2210), and a connection portion (2613) elasticallyconnecting the external portion (2611) and the internal portion (2612).

The upper support member (2610) may be connected to an upper surface ofthe first mover (2200) and an upper surface of the second mover (2300).To be more specific, the upper support member (2610) may be coupled toan upper surface of bobbin (2210) and an upper surface of housing(2310). The internal portion (2612) of the upper support member (2610)may be coupled to an upper coupling portion (2213) of the bobbin (2210),and the external portion (2611) of the upper support member (2610) maybe coupled to an upper coupling portion (2313) of the housing (2310).

The upper support member (2610) may be divided to six (6) pieces, forexample. At this time, four pieces of the six upper support members(2610) may be conductively connected to the first sensor portion (2710),and the remaining two pieces may be conductively connected to the firstcoil.

That is, the upper support member (610) may include first to sixth uppersupport units (2601, 2602, 2603, 2604, 2605, 2606), each spaced apartfrom the other. At this time, the first to fourth upper support units(2601, 2602, 2603, 2604) may be electrically connected to the firstsensor portion (2710). Furthermore, the fifth and sixth upper supportunits (2605, 2606) may be electrically connected to the first coil. Thefirst to fourth upper support units (2601, 2602, 2603, 2604) may supplythe electricity to the first sensor portion (2710) and may be used fortransmission/receipt of information and signals between a controller andthe first sensor portion (2710). The fifth and sixth upper support units(2605, 2606) may be used for supply of power to the first coil.

The first to fourth upper support units (2601, 2602, 2603, 2604) may bedisposed on a same planar surface as illustrated in FIG. 19.Furthermore, the first to fourth upper support units (2601, 2602, 2603,2604) have elasticity and can be deformed, such that a portion of anyone of the first to fourth upper support units (2601, 2602, 2603, 2604)may be deviated from the same planar surface.

The first and second upper support units (2601, 2602) may be verticallyoverlapped with a first lateral portion (2310 a) of the housing (2310).Alternatively, the third and fourth upper support units (2603, 2604) maybe vertically overlapped with a second lateral portion (2310 b) of thehousing (2310). Each of the first to sixth upper support units (2601,2602, 2603, 2604, 2605, 2606) may be formed with a different shape.However, the second and third upper support units (2602, 2603) may havea symmetrical shape. To be more specific, each of the second and thirdupper support units (2602, 2603) may have a symmetrical shape based onan imaginary straight line crossing the housing (2310) to a diagonaldirection.

The upper support member (2610) may include a coupling hole (2602 f) anda guide hole (2602 g).

The coupling hole (2602 f) may be so formed as to vertically penetrate aportion of the upper support member (2610). The coupling hole (2602 f)may be formed with a coupling lug (2314 a) of the housing (2310). Thatis, a width of the coupling hole (2602 f) may be greater than a width ofthe coupling lug (2314 a) by a predetermined size. The coupling hole(2602 f) may be formed with a round shape. However, the presentinvention is not limited thereto.

The guide hole (2602 g) may be spaced apart from the coupling hole (2602f). The guide hole (2602 g) may be so formed as to vertically penetratea portion of the upper support member (2610). The guide hole (2602 g)may be inserted by a guide lug (2314 b) of the housing (2310). That is,a width of the guide hole (2602 g) may be greater than a width of theguide lug (2314 b) by a predetermined size. The guide hole (2602 g) maybe formed with a round shape. However, the present invention is notlimited thereto.

The upper support member (2610) and the housing (2310) may be doublycoupled by a coupling by a first conductive portion (2602 a), anextension portion (2602 b), a bent portion (2602 c), a coupling portion(2602 d) and a second conductive portion (2602 e), and by a coupling bya guide hole (2602 g) and a guide lug (2314 b) to thereby inhibit theupper support member (2610) from rotating relative to the housing(2310).

The upper support member (2610) may include a first conductive portion(2602 a), an extension portion (2602 b), a bent portion (2602 c), acoupling portion (2602 d) and a second conductive portion (2602 e). Thesecond support unit (2602) may include a first conductive portion (2602a), an extension portion (2602 b), a bent portion (2602 c), a couplingportion (2602 d) and a second conductive portion (2602 e).

Although the first conductive portion (2602 a), the extension portion(2602 b), the bent portion (2602 c), the coupling portion (2602 d) andthe second conductive portion (2602 e) are explained as one element ofthe second upper support unit for convenience of explanation in thefollowing description, the first conductive portion (2602 a), theextension portion (2602 b), the bent portion (2602 c), the couplingportion (2602 d) and the second conductive portion (2602 e) may beapplied to any one of the first to sixth upper support units (2601,2602, 2603, 2604, 2605, 2606).

The second upper support unit (2602) may include a second lateralsupport unit (2632) and a first conductive portion (2602 a) coupled tothe second lateral support unit (2632).

The first conductive portion (2602 a) may be coupled to a second lateralsupport unit (2632). The first conductive portion (2602 a) may beelectrically conducted with the second lateral support unit (2632) tothereby receive a power from the circuit substrate (2410) connected tothe second lateral support unit (2632). The second upper support unit(2602) may include an extension portion (2602 b) extended outwardly fromthe first conductive portion (2602 a) along a circumference of thehousing (2310). The extension portion (2602 b) may be extended outwardlyfrom the first conductive portion (2602 a) along a circumference of thehousing (2310).

The second upper support unit (2602) may include a bent portion (2602 c)extended and bent inwardly from the extension portion (2602 b).

The bent portion (2602 c) may be extended by being bent inwardly fromthe extension portion (2602 b). The bent portion (2602 c) may beextended from a distal end of the extension portion (2602 b). The bentportion (2602 c) may have an acute angle between the bent portion (2602c) and the extension portion (2602 b). The bent portion (2602 c) may bebent at a portion thereof in order to be corresponded to a shape of theupper stopper (2316). The bent portion (2602 c) may be connected at oneend to the extension portion (2602 b) and connected at the other end tothe coupling portion (2602 d).

Each of the extension portion (2602 b) and the bent portion (2602 c) mayhave elasticity on at least one portion thereof. Thus, the extensionportion (2602 b) and the bent portion (2602 c) may be generally called a“cushion portion”. Meantime, the cushion portion may not be generatedwith short-circuit during reliability test through the foregoing shape.Furthermore, the cushion portion may not be generated with interferencewith the housing (2310) even if there is generated a deformation byshocks during the reliability test. That is, the cushion portion may beformed with a shape that generates no interference with the housing(2310) even if deformation is generated. However, explanation may bealso made in such a manner that at least one portion of the housing(2310) is omitted to thereby inhibit interference with the cushionportion.

The second upper support unit (2602) may include a coupling portion(2602 d) connected to the bent portion (2602 c) and coupled to thehousing (2602 c). The coupling portion (2602 d) may be connected to thebent portion (2602 c) and coupled to the housing (2602 c). The couplingportion (2602 d) may be formed with a coupling hole (2602 f) coupled bya coupling lug (2314 a) of the housing (2310), and a guide hole (2602 g)coupled by the guide lug (2314 b) of the housing (2310). That is, thecoupling portion (2602 d) of the second upper support unit (2702) may beso coupled as to inhibit the rotation relative to the housing (2310)through the dual coupling structure. Meantime, when the second uppersupport unit (2602) and the coupling lug (2314 a) are fused, arotational deformation of the upper support unit (2602) can beinhibited. The coupling portion (2602 d) may be connected by the bentportion (2602 c) and the second conductive portion (2602 c).

The second upper support unit (2602) may include a second conductiveportion (2602 e) extended from the coupling portion (2602 d) or the bentportion (2602 c) and electrically connected with the first sensorportion (2710). The second conductive portion (2602 e) may be extendedfrom the coupling portion (2602 d) or the bent portion (2602 c) andelectrically connected to the first sensor portion (2710). For instance,the second conductive portion (2602 e) and the terminal portion (2713)of the first sensor portion (2710) may be electrically conducted using asoldering. However, the present invention is not limited thereto.

The lower support member (2620) may include an external portion (2621),an internal portion (2622) and a connection portion (2623), for example.The lower support member (2620) may include an external portion (2621)coupled to the housing (2310), an internal portion (2622) coupled to thebobbin (2210) and a connection portion (2623) elastically connecting theexternal portion (2621) and the internal portion (2622).

The lower support member (2620) may be connected to a lower surface ofthe first mover (2200) and to a lower surface of the second mover(2300). To be more specific, the lower support member (2620) may beconnected to a lower surface of the bobbin (2210) and to a lower surfaceof the housing (2310). The internal portion (2622) of the lower supportmember (2620) may be coupled by a lower coupling portion of the bobbin(2210) and the external portion (2621) of the lower support member(2620) may be coupled by a lower coupling portion of the housing (2310).

The lower support member (2620) may be integrally formed, for example.However, the present invention is not limited thereto. In amodification, the lower support member (2620) may be divided to a pairof pieces and may be used for supply of electricity to the first coil.

The lateral support member (2630) may be fixed at one end to the stator(2400) and/or the base (2500), and coupled at the other end to the uppersupport member (2610) and/or the housing (2310). The lateral supportmember (2630) may be coupled at one side to the stator (2400) andcoupled at the other side to the upper support member (2610), forexample. Furthermore, in another exemplary embodiment, the lateralsupport member (2630) may be coupled at one side to the base (2500), andcoupled at the other side to the housing (2310), whereby the lateralsupport member (2630) may elastically support the second mover (2300)relative to the stator (2400) to allow the second mover (2300) tohorizontally move or to tilt.

The lateral support member (2630) may include a plurality of wires, forexample. Alternatively, the lateral support member (2630) may include aplurality of leaf springs as a modification. Meantime, the lateralsupport member (2630) may be integrally formed with the upper supportmember (2610).

The lateral support member (2630) may be electrically connected at adistal end of one side to the circuit substrate (2410), and electricallyconnected at a distal end of the other side to the upper support member(2610). The lateral support member (2630) may be formed in the samenumber as that of the upper support member (2610), for example. That is,the lateral support member (2630) may include first to sixth lateralsupport units (2631, 2632, 2633, 2634, 2635, 2636), each spaced apartfrom the other at a predetermined distance. At this time, the first tosixth support units (2631, 2632, 2633, 2634, 2635, 2636) may beelectrically connected in pair with the first to sixth upper supportmembers (2601, 2602, 2603, 2604, 2605, 2606). In this case, the lateralsupport member (2630) may supply electricity supplied from the stator(2400) or from outside to each of the upper support members (2610).

The number of lateral support members (2630) may be determined inconsideration of symmetry, for example. The lateral support member(2630) is such that each two lateral support members (2630) may berespectively formed on the first to fourth edge portions (2310 e, 2310f, 2310 g, 2310 h) of housing (2310), a total of eight (8) lateralsupport members being formed. That is, the lateral support member (2630)may include first to eighth lateral support units (2631, 2632, 2633,2634, 2635, 2636, 2637, 2638), each spaced apart from the other at apredetermined distance.

The first lateral support member (2631) may be electrically connected tothe first upper support unit (2601), the second lateral support member(2632) may be electrically connected to the second upper support unit(2602), the third lateral support member (2633) may be electricallyconnected to the third upper support unit (2603), the fourth lateralsupport member (2634) may be electrically connected to the fourth uppersupport unit (2604), the fifth lateral support member (2635) may beelectrically connected to the fifth upper support unit (2605), and thesixth lateral support member (2636) may be electrically connected to thesixth upper support unit (2606).

The lateral support member (2630) or the upper support member (2610) mayinclude a shock absorption portion (not shown) for shock absorption, forexample. The shock absorption portion may be formed on at least any oneof the lateral support member (2630) and the upper support member(2610). The shock absorption portion may be a separate member like adamper. Furthermore, the shock absorption portion may be realizedthrough a shape change on any one part of the lateral support member(2630) and the upper support member (2610).

The sensor portion (2700) may be used for any one of the AF feedback andOIS feedback. The sensor portion (2700) may detect positions ormovements of at least any one of the first mover (2200) and the secondmover (2300). The sensor portion (2700) may include a first sensorportion (2710) and a second sensor portion (2720), for example. Thefirst sensor portion (2710) may provide information for AF feedback bysensing a relative vertical movement of the bobbin (2210) relative tothe housing (2310). The second sensor portion (2720) may provideinformation for OIS feedback by detecting the horizontal directionmovement and tilt of the second mover (2300). The first sensor portion(2710) may include a first sensor (not shown), a substrate (2712) and asensing magnet (2715), for example.

The first sensor may be disposed at the housing (2310). The first sensormay be disposed at an upper surface of housing (2310). At this time, thesensing magnet (2715) may be disposed at an upper surface of bobbin(2210). The first sensor may be mounted on the substrate (2712). Thefirst sensor may be disposed at the housing (2310) while being mountedon the substrate (2712).

The first sensor may detect movement or position of the bobbin (2210).The first sensor may detect a position or movement of bobbin (2210) bydetecting the sensing magnet (2715) disposed at the bobbin (2210). Thefirst sensor may be a Hall sensor for detecting magnetic force ofmagnet, for example.

The present invention is not limited thereto.

The substrate (2712) may be mounted with the first sensor. The substrate(2712) may be disposed at the housing (2310). The substrate (2712) mayelectrically conduct with the upper support member (2610), whereby thesubstrate (2712) can supply electricity to the first sensor andtransmit/receive information or signal from the controller. Thesubstrate (2712) may include a terminal portion (2713).

The terminal portion (2713) may be electrically connected with the uppersupport member (2610). To be more specific, first to fourth terminals(2713 a, 2713 b, 2713 c, 2713 d) of terminal portion (2713) may beelectrically conducted in pair with the first to fourth upper supportunits (2601, 2602, 2603, 2604).

That is, the first terminal (2713 a) may be electrically connected withthe first upper support unit (2601), the second terminal (2713 b) may beelectrically connected with the second upper support unit (2602), thethird terminal (2713 c) may be electrically connected with the thirdupper support unit (2603) and the fourth terminal (2713 d) may beelectrically connected with the fourth upper support unit (2604). Theterminal portion (2713) may be so disposed as to face upwards. However,the present invention is not limited thereto.

The sensing magnet (2715) may be disposed with the bobbin (2210). Atthis time, the sensing magnet (2715) may be called a “second magnet” inorder to be distinguished from the “first magnet”, which is a drivingmagnet.

The lens driving apparatus according to exemplary embodiments of thepresent invention may further comprise a compensation magnet (2716)disposed at the bobbin (2210) and diagonally positioned with the sensingmagnet (2715) based on a center of bobbin (2210). The compensationmagnet (2716) may be called a “third magnet” in order to bedistinguished from the second magnet. The compensation magnet (2716) maybe so disposed as to constitute a magnetic force balance with thesensing magnet (2715). That is, the compensation magnet (2716) may be sodisposed as to solve a magnetic force unbalance generated from thesensing magnet (2715). The sensing magnet (2715) may be disposed at oneside of the bobbin (2210) and the compensation magnet (2716) may bedisposed at the other side of the bobbin (2210).

The second sensor portion (2720) may be disposed at the stator (2400).The second sensor portion (2720) may be disposed at an upper surface ora lower surface of circuit substrate (2410). The second sensor portion(2720) may be disposed at a lower surface of the circuit substrate(2410) to be positioned at a sensor mounting portion (2530) formed atthe base (2500), for example. The second sensor portion (2720) mayinclude a Hall sensor, for example. In this case, the second sensorportion (2720) may sense the magnetic field to sense a relative movementof the second mover (2300) relative to the stator (2400). The secondsensor portion (2720) may be formed in two pieces to detect both the xaxis and y axis movements of the second mover (2300). Meantime, thesecond sensor portion (2720) may be so disposed as not to verticallyoverlap with an FP coil of the third driving portion (2420).

Now, the operation of the camera module according to a third exemplaryembodiment of the present invention will be described.

First, an AF (Auto Focus) function of the camera module according to theexemplary embodiment of the present invention will be explained.

When a power is supplied to the coil of the first driving portion(2220), the first driving portion (2220) may perform movement relativeto the second driving portion (2320) by electromagnetic interactionbetween magnets of the first driving portion (2220) and the seconddriving portion (2320). At this time, the bobbin (2210) coupled with thefirst driving portion (2220) may integrally move along with the firstdriving portion (2220). That is, the bobbin (2210) coupled to an innerside of the lens module may vertically move relative to the housing(2310). The said movement by the bobbin (2210) may result in the lensmodule closing in onto or distancing from the image sensor, wherebyfocus adjustment to an object can be performed by supplying a power tothe coil of the first driving portion (2220).

Meantime, an AF feedback may be applied in order to perform a moreaccurate realization of AF function for the camera module according tothe exemplary embodiment of the present invention.

The first sensor mounted on the housing (2310) and formed with a Hallsensor can detect a magnetic field of the sensing magnet (2715) fixed tothe bobbin (2210).

Hence, when the bobbin (2210) performs a relative movement relative tothe housing (2310), the amount of magnetic field detected by the firstsensor is changed. Using the abovementioned method, the first sensor maytransmit a detection value to a controller by detecting the movement ofz axis direction or a position of the bobbin (2210). The controller maydetermine whether to perform an additional movement to the bobbin (2210)through the received detection value. This process is performed in realtime, such that the AF function of the camera module according to anexemplary embodiment of the present invention can be more accuratelyimplemented through the AF feedback.

Now, the OIS function of camera module according to the exemplaryembodiment of the present invention will be described.

When a power is supplied to a coil of third driving portion (2420), thesecond driving portion (2320) may perform a movement relative to thethird driving portion (2420) through an electromagnetic interactionbetween the magnets of the third driving portion (2420) and the seconddriving portion (2320). At this time, the housing (2310) coupled by thesecond driving portion (2320) may move integrally with the seconddriving portion (2320).

That is, the housing (2310) may horizontally move relative to the base(2500). Meantime, at this time, the housing (2310) may be induced totilt relative to the base (2500). At this time, the bobbin (2210) mayalso integrally move along with the housing (2310). This said movementof housing (2310) may result in the lens module moving to a directionparallel to that of the image sensor being positioned relative to theimage sensor, whereby the OIS function can be performed by supplyingelectricity to the coil of the third driving portion (2420).

Meantime, an OIS feedback may be applied for more accurateimplementation of OIS function of camera module according to theexemplary embodiment of the present invention.

A pair of second sensor portions (2720) mounted on the base (2500) andformed with a Hall sensor may detect a magnetic field of a magnet at thesecond driving portion (2320) fixed to the housing (2310). Thus, whenthe housing (2310) performs a relative movement relative to the base(2500), the amount of magnetic field detected by the second sensorportion (2720) is changed. Using the abovementioned method, the pair ofsecond sensor portions (2720) may transmit a detection value to acontroller by detecting the movement of horizontal direction (x axis andy axis directions) or a position of the housing (2310). The controllermay determine whether to perform an additional movement relative to thehousing (2310) through the received detection value. This process isperformed in real time, such that the OIS function of the camera moduleaccording to an exemplary embodiment of the present invention can bemore accurately implemented through the OIS feedback.

Although the present disclosure has been explained with all constituentelements forming the exemplary embodiments of the present disclosurebeing combined in one embodiment, or being operated in one embodiment,the present disclosure is not limited thereto. That is, in some cases,the described features, structures, or operations may be combined in anysuitable manner in one or more embodiments. It will also be readilyunderstood that the components of the embodiments, as generallydescribed and illustrated in the figures herein, could be arranged anddesigned in a wide variety of different configurations.

Terms used in the specification are only provided to illustrate theembodiments and should not be construed as limiting the scope and spiritof the present disclosure. In the specification, a singular form ofterms includes plural forms thereof, unless specifically mentionedotherwise. In the term “includes”, “including”, “comprises” and/or“comprising” as used herein, the mentioned component, step, operationand/or device is not excluded from presence or addition of one or moreother components, steps, operations and/or devices. Unless otherwisedefined, all terms including technical and scientific terms used hereinhave the same meaning as commonly understood by one of ordinary skill inthe art to which this invention belongs. It will be further understoodthat terms, such as those defined in commonly used dictionaries, shouldbe interpreted as having a meaning that is consistent with their meaningin the context of the relevant art and the present disclosure, and willnot be interpreted in an idealized or overly formal sense unlessexpressly so defined herein.

Although embodiments have been described with reference to a number ofillustrative embodiments thereof, it should be understood that numerousother modifications and embodiments can be devised by those skilled inthe art that will fall within the spirit and scope of the principles ofthis disclosure. More particularly, various variations and modificationsare possible in the component parts and/or arrangements of the subjectcombination arrangement within the scope of the disclosure, the drawingsand the appended claims.

Although the abovementioned embodiments according to the presentinvention have been described in detail with reference to the abovespecific examples, the embodiments are, however, intended to beillustrative only, and thereby do not limit the scope of protection ofthe present invention. Thereby, it should be appreciated by the skilledin the art that changes, modifications and amendments to the aboveexamples may be made without deviating from the scope of protection ofthe invention.

The invention claimed is:
 1. A lens driving device comprising: a base; ahousing disposed on the base; a bobbin disposed in the housing; a firstcoil disposed on the bobbin; a first magnet disposed on the housing andfacing the first coil; a first board disposed on the base and comprisinga second coil facing the first magnet; an elastic member connecting thehousing and the bobbin; a support member electrically connecting theelastic member and the first board; a second magnet disposed on thebobbin; a second board; and a Hall sensor disposed on the second boardand configured to sense the second magnet, wherein the Hall sensorcomprises a sensing part configured to sense a magnetic field, whereinthe Hail sensor comprises first and second surfaces opposite to eachother, third and fourth surfaces connecting the first and secondsurfaces and opposite to each other, and fifth and sixth surfacesconnecting the first and second surfaces and opposite to each other,wherein the Hall sensor is coupled to a first surface of the secondboard, wherein the first surface of the Hall sensor faces the firstsurface of the second board, and wherein a distance between the fifthsurface and the sixth surface of the Hall sensor is greater than adistance between the third surface and the fourth surface of the Hallsensor.
 2. The lens driving device of claim 1, wherein a distancebetween a center of the sensing part and the third surface of the Hallsensor is greater than a distance between the center of the sensing partand the second surface of the Hall sensor, and wherein a distancebetween the center of the sensing part and the second surface of theHall sensor is shorter than a distance between the center of the sensingpart and the first surface of the Hall sensor.
 3. The lens drivingdevice of claim 1, wherein the second magnet comprises a first surfacefacing at least one of the housing and the sensor, and wherein the firstsurface of the second board faces an imaginary plane comprising thefirst surface of the second magnet.
 4. The lens driving device of claim3, wherein the second surface of the Hall sensor faces the imaginaryplane comprising the first surface of the second magnet.
 5. The lensdriving device of claim 3, wherein at least a portion of the secondsurface of the Hall sensor is overlapped with the first surface of thesecond magnet in a direction perpendicular to an optical axis.
 6. Thelens driving device of claim 1, wherein the distance between the centerof the sensing part and the second surface of the Hall sensor is 90 to110 μm, and wherein the distance between the center of the sensing partand the third surface of the Hall sensor is 240 to 260 μm.
 7. The lensdriving device of claim 1, wherein the sensing part is disposed at aposition higher than that of an upper surface of the second magnet. 8.The lens driving device of claim 1, wherein the first surface of thesecond board is vertically disposed on an upper surface of the housing.9. The lens driving device of claim 1, comprising a third magnet,wherein the second board is disposed on the housing, and wherein thethird magnet is disposed on the bobbin and disposed to be symmetricalwith the second magnet based on a center axis of the bobbin.
 10. Thelens driving device of claim 1, wherein the second magnet is disposedabove the first coil.
 11. The lens driving device of claim 1, wherein adistance between the center of the sensing part and the third surface ofthe Hall sensor is same as a distance between the center of the sensingpart and the fourth surface of the Hall sensor, and wherein a distancebetween the center of the sensing part and the fifth surface of the Hallsensor is same as a distance between the center of the sensing part andthe sixth surface of the Hall sensor.
 12. The lens driving device ofclaim 1, wherein the second surface of the Hall sensor is parallel tothe first surface of the Hall sensor, wherein the fourth surface of theHall sensor is parallel to the third surface of the Hall sensor, andwherein the sixth surface of the Hall sensor is parallel to the fifthsurface of the Hall sensor.
 13. The lens driving device of claim 1,wherein the fifth and sixth surfaces of the Hall sensor connect to thethird and fourth surfaces of the Hall sensor.
 14. A camera modulecomprising: a printed circuit board (PCB); an image sensor disposed onthe PCB; the lens driving device of claim 1 disposed on the PCB; and alens coupled to the bobbin of the lens driving device.
 15. An opticalapparatus comprising: a main body; the camera module of claim 14disposed on the main body; and a display part disposed on the main bodyand configured to output an image photographed by the camera module. 16.A lens driving device comprising: a base; a housing disposed on thebase; a bobbin disposed in the housing; a first coil disposed on thebobbin; a first magnet disposed on the housing and facing the firstcoil; a second coil disposed on the base and facing the first magnet; asecond magnet disposed on the bobbin; a second board; and a Hall sensordisposed on the second board and sensing configured to sense the secondmagnet, wherein the Hall sensor comprises a part configured to sense amagnetic field, and wherein Hall sensor comprises first and secondsurfaces opposite to each other.
 17. The lens driving device of claim16, wherein a distance between a center of the sensing part and thesecond surface of the Hall sensor is greater than a distance between thecenter of the sensing part and the first surface of the Hall sensor,wherein the Hall sensor comprises third and fourth surfaces connectingthe first and second surfaces and opposite to each other, and fifth andsixth surfaces connecting the first and second surfaces and opposite toeach other, and wherein a distance between the fifth surface and thesixth surface of the Hall sensor greater than a distance between thethird surface and the fourth surface of the Hall sensor.
 18. The lensdriving device of claim 17, wherein a distance between a center of thesensing part and the third surface of the Hall sensor is greater than adistance between the center of the sensing part and the second surfaceof the Hall sensor.
 19. The lens driving device of claim 18, wherein thedistance between the center of the sensing part and the second surfaceof the Hall sensor is 90 to 110 μm, and wherein the distance between thecenter of the sensing part and the third surface of the Hall sensor is240 to 260 μm.
 20. A camera module comprising: a printed circuit board(PCB); an image sensor disposed on the PCB; the lens driving device ofclaim 16 disposed on the PCB; and a lens coupled to the bobbin of thelens driving device.